CVE-2021-37159

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

• kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

• kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

• kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

• kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

• kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

• kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

• kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

• kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

• kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

• kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

• kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)

• kernel: Buffer overwrite in decode_nfs_fh function (CVE-2021-4157)

• kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

• kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

• hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715 (CVE-2021-26401)

• kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)

• kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c (CVE-2021-37159)

• kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write (CVE-2021-41864)

• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

• kernel: an array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (CVE-2021-43389)

• kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device (CVE-2021-43976)

• kernel: use-after-free in the TEE subsystem (CVE-2021-44733)

• kernel: information leak in the IPv6 implementation (CVE-2021-45485)

• kernel: information leak in the IPv4 implementation (CVE-2021-45486)

• hw: cpu: intel: Branch History Injection (BHI) (CVE-2022-0001)

• hw: cpu: intel: Intra-Mode BTI (CVE-2022-0002)

• kernel: Local denial of service in bond_ipsec_add_sa (CVE-2022-0286)

• kernel: DoS in sctp_addto_chunk in net/sctp/sm_make_chunk.c (CVE-2022-0322)

• kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (CVE-2022-1011)

• kernel: use-after-free in nouveau kernel module (CVE-2020-27820)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.6 Release Notes linked from the References section.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

• kernel: speculation on incompletely validated data on IBM Power9 (CVE-2020-4788)

• kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

• kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

• kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

• kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

• kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

• kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

• kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

• kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

• kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

• kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

• kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)

• kernel: Buffer overwrite in decode_nfs_fh function (CVE-2021-4157)

• kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

• kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

• kernel: arm: SIGPAGE information disclosure vulnerability (CVE-2021-21781)

• hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715 (CVE-2021-26401)

• kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)

• kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c (CVE-2021-37159)

• kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write (CVE-2021-41864)

• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

• kernel: ppc: kvm: allows a malicious KVM guest to crash the host (CVE-2021-43056)

• kernel: an array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (CVE-2021-43389)

• kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device (CVE-2021-43976)

• kernel: use-after-free in the TEE subsystem (CVE-2021-44733)

• kernel: information leak in the IPv6 implementation (CVE-2021-45485)

• kernel: information leak in the IPv4 implementation (CVE-2021-45486)

• hw: cpu: intel: Branch History Injection (BHI) (CVE-2022-0001)

• hw: cpu: intel: Intra-Mode BTI (CVE-2022-0002)

• kernel: Local denial of service in bond_ipsec_add_sa (CVE-2022-0286)

• kernel: DoS in sctp_addto_chunk in net/sctp/sm_make_chunk.c (CVE-2022-0322)

• kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (CVE-2022-1011)

• kernel: use-after-free in nouveau kernel module (CVE-2020-27820)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.6 Release Notes linked from the References section.

hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free.

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

• kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)

• kernel: avoid cyclic entity chains due to malformed USB descriptors (CVE-2020-0404)

• kernel: speculation on incompletely validated data on IBM Power9 (CVE-2020-4788)

• kernel: integer overflow in k_ascii() in drivers/tty/vt/keyboard.c (CVE-2020-13974)

• kernel: out-of-bounds read in bpf_skb_change_head() of filter.c due to a use-after-free (CVE-2021-0941)

• kernel: joydev: zero size passed to joydev_handle_JSIOCSBTNMAP() (CVE-2021-3612)

• kernel: reading /proc/sysvipc/shm does not scale with large shared memory segment counts (CVE-2021-3669)

• kernel: out-of-bound Read in qrtr_endpoint_post in net/qrtr/qrtr.c (CVE-2021-3743)

• kernel: crypto: ccp - fix resource leaks in ccp_run_aes_gcm_cmd() (CVE-2021-3744)

• kernel: possible use-after-free in bluetooth module (CVE-2021-3752)

• kernel: unaccounted ipc objects in Linux kernel lead to breaking memcg limits and DoS attacks (CVE-2021-3759)

• kernel: DoS in ccp_run_aes_gcm_cmd() function (CVE-2021-3764)

• kernel: sctp: Invalid chunks may be used to remotely remove existing associations (CVE-2021-3772)

• kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (CVE-2021-3773)

• kernel: possible leak or coruption of data residing on hugetlbfs (CVE-2021-4002)

• kernel: security regression for CVE-2018-13405 (CVE-2021-4037)

• kernel: Buffer overwrite in decode_nfs_fh function (CVE-2021-4157)

• kernel: cgroup: Use open-time creds and namespace for migration perm checks (CVE-2021-4197)

• kernel: Race condition in races in sk_peer_pid and sk_peer_cred accesses (CVE-2021-4203)

• kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies (CVE-2021-20322)

• kernel: arm: SIGPAGE information disclosure vulnerability (CVE-2021-21781)

• hw: cpu: LFENCE/JMP Mitigation Update for CVE-2017-5715 (CVE-2021-26401)

• kernel: Local privilege escalation due to incorrect BPF JIT branch displacement computation (CVE-2021-29154)

• kernel: use-after-free in hso_free_net_device() in drivers/net/usb/hso.c (CVE-2021-37159)

• kernel: eBPF multiplication integer overflow in prealloc_elems_and_freelist() in kernel/bpf/stackmap.c leads to out-of-bounds write (CVE-2021-41864)

• kernel: Heap buffer overflow in firedtv driver (CVE-2021-42739)

• kernel: ppc: kvm: allows a malicious KVM guest to crash the host (CVE-2021-43056)

• kernel: an array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (CVE-2021-43389)

• kernel: mwifiex_usb_recv() in drivers/net/wireless/marvell/mwifiex/usb.c allows an attacker to cause DoS via crafted USB device (CVE-2021-43976)

• kernel: use-after-free in the TEE subsystem (CVE-2021-44733)

• kernel: information leak in the IPv6 implementation (CVE-2021-45485)

• kernel: information leak in the IPv4 implementation (CVE-2021-45486)

• hw: cpu: intel: Branch History Injection (BHI) (CVE-2022-0001)

• hw: cpu: intel: Intra-Mode BTI (CVE-2022-0002)

• kernel: Local denial of service in bond_ipsec_add_sa (CVE-2022-0286)

• kernel: DoS in sctp_addto_chunk in net/sctp/sm_make_chunk.c (CVE-2022-0322)

• kernel: FUSE allows UAF reads of write() buffers, allowing theft of (partial) /etc/shadow hashes (CVE-2022-1011)

• kernel: use-after-free in nouveau kernel module (CVE-2020-27820)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

• ELSCVE-666: CVE-2021-34693: can: bcm: fix infoleak in struct bcm_msg_head
• ELSCVE-705: CVE-2021-38160: virtio_console: Assure used length from device is limited
• ELSCVE-769: CVE-2014-4508: x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
• ELSCVE-844: CVE-2021-3573: Bluetooth: use correct lock to prevent UAF of hdev object
• ELSCVE-503: CVE-2021-32399: bluetooth: eliminate the potential race condition when removing the HCI controller
• ELSCVE-451: CVE-2021-37159: hso: fix a use after free condition
• ELSCVE-387: CVE-2021-38205: net: xilinx_emaclite: Do not print real IOMEM pointer
• ELSCVE-547: CVE-2021-3178: nfsd4: readdirplus shouldn't return parent of export
• ELSCVE-547: nfsd: fix compose_entry_fh() failure exits
• ELSCVE-547: nfsd: make local functions static
• ELSCVE-682: CVE-2021-20265: af_unix: fix struct pid memory leak
• ELSCVE-531: CVE-2021-20292: drm/ttm/nouveau: don't call tt destroy callback on alloc failure.
• ELSCVE-543: CVE-2021-28972: PCI: rpadlpar: Fix potential drc_name corruption in store functions
• ELSCVE-575: CVE-2021-3612: Input: joydev - prevent use of not validated data in JSIOCSBTNMAP ioctl
• ELSCVE-575: Input: joydev - prevent potential read overflow in ioctl
• ELSCVE-575: Input: joydev - fix possible ERR_PTR() dereferencing
• ELSCVE-575: Input: joydev - use memdup_user() to duplicate memory from user-space

• ELSCVE-666: CVE-2021-34693: can: bcm: fix infoleak in struct bcm_msg_head
• ELSCVE-705: CVE-2021-38160: virtio_console: Assure used length from device is limited
• ELSCVE-769: CVE-2014-4508: x86_32, entry: Do syscall exit work on badsys (CVE-2014-4508)
• ELSCVE-844: CVE-2021-3573: Bluetooth: use correct lock to prevent UAF of hdev object
• ELSCVE-503: CVE-2021-32399: bluetooth: eliminate the potential race condition when removing the HCI controller
• ELSCVE-451: CVE-2021-37159: hso: fix a use after free condition
• ELSCVE-387: CVE-2021-38205: net: xilinx_emaclite: Do not print real IOMEM pointer
• ELSCVE-547: CVE-2021-3178: nfsd4: readdirplus shouldn't return parent of export
• ELSCVE-547: nfsd: fix compose_entry_fh() failure exits
• ELSCVE-547: nfsd: make local functions static
• ELSCVE-682: CVE-2021-20265: af_unix: fix struct pid memory leak
• ELSCVE-531: CVE-2021-20292: drm/ttm/nouveau: don't call tt destroy callback on alloc failure.
• ELSCVE-543: CVE-2021-28972: PCI: rpadlpar: Fix potential drc_name corruption in store functions
• ELSCVE-575: CVE-2021-3612: Input: joydev - prevent use of not validated data in JSIOCSBTNMAP ioctl
• ELSCVE-575: Input: joydev - prevent potential read overflow in ioctl
• ELSCVE-575: Input: joydev - fix possible ERR_PTR() dereferencing
• ELSCVE-575: Input: joydev - use memdup_user() to duplicate memory from user-space

• kvm: initialize all of the kvm_debugregs structure before sending it to userspace {CVE-2023-1513}
• wifi: mac80211: fix MBSSID parsing use-after-free {CVE-2022-42719}
• mac80211: always allocate struct ieee802_11_elems {CVE-2022-42719}
• netfilter: nf_tables: initialize registers in nft_do_chain() {CVE-2022-1016}
• xprtrdma: fix incorrect header size calculations {CVE-2022-0812}
• net: usb: fix memory leak in smsc75xx_bind {CVE-2021-47171}
• i2c: i801: Don't generate an interrupt on bus reset {CVE-2021-47153}
• pid: take a reference when initializing cad_pid {CVE-2021-47118}
• Input: appletouch - initialize work before device registration {CVE-2021-46932}
• HID: usbhid: fix info leak in hid_submit_ctrl {CVE-2021-46906}
• quota: check block number when reading the block in quota file {CVE-2021-45868}
• mwifiex: Fix skb_over_panic in mwifiex_usb_recv() {CVE-2021-43976}
• atlantic: Fix OOB read and write in hw_atl_utils_fw_rpc_wait {CVE-2021-43975}
• isdn: cpai: check ctr->cnr to avoid array index out of bound {CVE-2021-43389}
• usb: hso: fix error handling code of hso_create_net_device {CVE-2021-37159}
• can: bcm: fix infoleak in struct bcm_msg_head {CVE-2021-34693}
• dm ioctl: fix out of bounds array access when no devices {CVE-2021-31916}
• KVM: x86: hyper-v: Fix Hyper-V context null-ptr-deref {CVE-2021-30178}
• perf/x86/intel: Fix a crash caused by zero PEBS status {CVE-2021-28971}
• btrfs: fix race when cloning extent buffer during rewind of an old root {CVE-2021-28964}
• ovl: fix missing negative dentry check in ovl_rename() {CVE-2021-20321}
• drm/ttm/nouveau: don't call tt destroy callback on alloc failure. {CVE-2021-20292}
• bpf: Verifer, adjust_scalar_min_max_vals to always call update_reg_bounds() {CVE-2021-4159}
• btrfs: unlock newly allocated extent buffer after error {CVE-2021-4149}
• tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop. {CVE-2021-3679}
• net: mac802154: Fix general protection fault {CVE-2021-3659}
• nfsd4: readdirplus shouldn't return parent of export {CVE-2021-3178}
• Bluetooth: SMP: Fail if remote and local public keys are identical {CVE-2021-0129}
• drm/nouveau: clean up all clients on device removal {CVE-2020-27820}
• drm/nouveau: Add a dedicated mutex for the clients list {CVE-2020-27820}
• drm/nouveau: use drm_dev_unplug() during device removal {CVE-2020-27820}
• Bluetooth: SMP: Fail if remote and local public keys are identical {CVE-2020-26555}
• vsock: Fix memory leak in vsock_connect() {CVE-2022-3629}
• RDMA/core: Don't infoleak GRH fields {CVE-2021-3923}
• xen/netfront: force data bouncing when backend is untrusted {CVE-2022-33741}
• net: Rename and export copy_skb_header
• floppy: use a statically allocated error counter {CVE-2022-1652}
• fuse: fix pipe buffer lifetime for direct_io {CVE-2022-1011}
• aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts {CVE-2024-26898}
• smb: client: fix use-after-free bug in cifs_debug_data_proc_show() {CVE-2023-52752}
• media: pvrusb2: fix use after free on context disconnection {CVE-2023-52445}
• media: dm1105: Fix use after free bug in dm1105_remove due to race condition {CVE-2023-35824}
• perf: Fix perf_event_validate_size() lockdep splat {CVE-2023-6931}
• perf: Fix perf_event_validate_size() {CVE-2023-6931}
• net/sched: sch_hfsc: Ensure inner classes have fsc curve {CVE-2023-4623}
• relayfs: fix out-of-bounds access in relay_file_read {CVE-2023-3268}
• xfs: verify buffer contents when we skip log replay {CVE-2023-2124}
• Bluetooth: btsdio: fix use after free bug in btsdio_remove due to race condition {CVE-2023-1989}
• Fix double fget() in vhost_net_set_backend() {CVE-2023-1838}
• net/sched: cls_tcindex: downgrade to imperfect hash {CVE-2023-1829}
• xen/netfront: fix leaking data in shared pages {CVE-2022-33740}
• can: ems_usb: ems_usb_start_xmit(): fix double dev_kfree_skb() in error path {CVE-2022-28390}
• xen/blkfront: fix leaking data in shared pages {CVE-2022-26365}
• mISDN: fix use-after-free bugs in l1oip timer…

The openSUSE Leap 15.2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

The following non-security bugs were fixed:

• ABI: sysfs-kernel-slab: Document some stats (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table (git-fixes).
• ASoC: cs42l42: Correct some register default values (git-fixes).
• ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER (git-fixes).
• ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
• ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
• ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
• ASoC: rockchip: Use generic dmaengine code (git-fixes).
• ata: sata_mv: Fix the error handling of mv_chip_id() (git-fixes).
• ath10k: fix control-message timeout (git-fixes).
• ath10k: fix division by zero in send path (git-fixes).
• ath10k: fix max antenna gain unit (git-fixes).
• ath10k: Fix missing frame timestamp for beacon/probe-resp (git-fixes).
• ath6kl: fix control-message timeout (git-fixes).
• ath6kl: fix division by zero in send path (git-fixes).
• ath9k: Fix potential interrupt storm on queue reset (git-fixes).
• auxdisplay: ht16k33: Connect backlight to fbdev (git-fixes).
• auxdisplay: ht16k33: Fix frame buffer device blanking (git-fixes).
• auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string (git-fixes).
• b43: fix a lower bounds test (git-fixes).
• b43legacy: fix a lower bounds test (git-fixes).
• Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync (git-fixes).
• Bluetooth: fix init and cleanup of sco_conn.timeout_work (git-fixes).
• bpf: Add kconfig knob for disabling unpriv bpf by default (jsc#SLE-22573)
• bpf: Disallow unprivileged bpf by default (jsc#SLE-22573).
• bpf: Fix potential race in tail call compatibility check (git-fixes).
• btrfs: block-group: Rework documentation of check_system_chunk function (bsc#1192896).
• btrfs: fix deadlock between chunk allocation and chunk btree modifications (bsc#1192896).
• btrfs: fix memory ordering between normal and ordered work functions (git-fixes).
• btrfs: update comments for chunk allocation -ENOSPC cases (bsc#1192896).
• cgroup/cpuset: Change…

The following security bugs were fixed:

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

The following non-security bugs were fixed:

• acpi/arm64: fix next_platform_timer() section mismatch error (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Add quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell Precision 5560 laptop (git-fixes).
• ALSA: hda/realtek: Fix for quirk to enable speaker output on the Lenovo 13s Gen2 (git-fixes).
• ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14 (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: hda: Use position buffer for SKL+ again (git-fixes).
• ALSA: pcm: Workaround for a wrong offset in SYNC_PTR compat ioctl (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA:…

The SUSE Linux Enterprise 15 SP3 kernel for Azure was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

The following non-security bugs were fixed:

• ABI: sysfs-kernel-slab: Document some stats (git-fixes).
• ALSA: hda: fix general protection fault in azx_runtime_idle (git-fixes).
• ALSA: hda: Free card instance properly at probe errors (git-fixes).
• ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14 (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: hda: Use position buffer for SKL+ again (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA: uapi: Fix a C++ style comment in asound.h (git-fixes).
• ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Add minimal-mute notion in dB mapping table (bsc#1192375).
• ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Fix dB level of Bose Revolve+ SoundLink (bsc#1192375).
• ALSA: usb-audio: Use int for dB map values (bsc#1192375).
• ARM: socfpga: Fix crash with CONFIG_FORTIRY_SOURCE (bsc#1192473).
• ASoC: cs42l42: Correct some register default values (git-fixes).
• ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER (git-fixes).
• ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
• ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
• ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
• ASoC: rockchip: Use generic dmaengine code (git-fixes).
• ASoC: SOF: topology: do not power down primary core during topology removal (git-fixes).
• ASoC: topology: Fix stub for snd_soc_tplg_component_remove() (git-fixes).
• ata: sata_mv: Fix the error handling of mv_chip_id() (git-fixes).
• ath10k: fix control-message timeout (git-fixes).
• ath10k: fix division by zero in send path (git-fixes).
• ath10k: fix max antenna gain unit (git-fixes).
• ath10k: Fix missing frame timestamp for beacon/probe-resp (git-fixes).
• ath10k: sdio: Add missing BH locking around napi_schdule() (git-fixes).
• ath6kl: fix control-message timeout (git-fixes).
• ath6kl: fix division by zero in send path (git-fixes).
• ath9k: Fix potential interrupt storm on queue reset (git-fixes).
• auxdisplay: ht16k33: Connect backlight to fbdev (git-fixes).
• auxdisplay: ht16k33: Fix frame buffer device blanking (git-fixes). -…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

In hso_free_net_device of net/usb/hso.c, there is a possible use after free bug. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

The SUSE Linux Enterprise 11 SP4 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563 bnc#1192267).
• CVE-2014-7841: The sctp_process_param function in net/sctp/sm_make_chunk.c in the SCTP implementation, when ASCONF is used, allowed remote attackers to cause a denial of service (NULL pointer dereference and system crash) via a malformed INIT chunk (bnc#904899 bnc#905100).
• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673 bnc#1192036).
• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1188876).
• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2021-42008: The decode_data function in drivers/net/hamradio/6pack.c had a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access (bnc#1191315).
• CVE-2021-38160: Data corruption or loss could be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size in drivers/char/virtio_console.c (bsc#1190117)
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-38198: arch/x86/kvm/mmu/paging_tmpl.h incorrectly computed the access permissions of a shadow page, leading to a missing guest protection page fault (bnc#1189262).
• CVE-2021-3653: A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the 'int_ctl' field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. (bnc#1189399).
• CVE-2021-3679: A lack of CPU resource in the Linux kernel tracing module functionality was found in the way user uses trace ring buffer in a specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could use this flaw to starve the resources causing denial of service (bnc#1189057).
• CVE-2021-3609: A potential local privilege escalation in the CAN BCM networking protocol was fixed (bsc#1187215).
• CVE-2020-36385: drivers/infiniband/core/ucma.c has a use-after-free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c (bnc#1187050).

The following non-security bugs were fixed:

• sctp: check asoc peer.asconf_capable before processing asconf (bsc#1190351).
• sctp: fully initialize v4 addr in some functions (bsc#1188563).
• sctp: simplify addr copy (bsc#1188563).

The following security bugs were fixed:

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

The following non-security bugs were fixed:

• acpi/arm64: fix next_platform_timer() section mismatch error (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Add quirk for TongFang PHxTxX1 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Enable 4-speaker output for Dell Precision 5560 laptop (git-fixes).
• ALSA: hda/realtek: Fix for quirk to enable speaker output on the Lenovo 13s Gen2 (git-fixes).
• ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14 (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda/realtek: Quirks to enable speaker output for Lenovo Legion 7i 15IMHG05, Yoga 7i 14ITL5/15ITL5, and 13s Gen2 laptops (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: hda: Use position buffer for SKL+ again (git-fixes).
• ALSA: pcm: Workaround for a wrong offset in SYNC_PTR compat ioctl (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA:…

The SUSE Linux Enterprise 12 SP5 Real Time kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free in hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

The following non-security bugs were fixed:

• IB/hfi1: Fix abba locking issue with sc_disable() (git-fixes)
• ICMPv6: Add ICMPv6 Parameter Problem, code 3 definition (bsc#1191241).
• IPv6: reply ICMP error if the first fragment do not include all headers (bsc#1191241).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• NFS: Do uncached readdir when we're seeking a cookie in an empty page cache (bsc#1191628).
• PM: base: power: do not try to use non-existing RTC for storing data (git-fixes).
• SMB3.1.1: Fix ids returned in POSIX query dir (bsc#1190317).
• SMB3.1.1: do not log warning message if server does not populate salt (bsc#1190317).
• SMB3.1.1: fix mount failure to some servers when compression enabled (bsc#1190317).
• SMB3.1.1: remove confusing mount warning when no SPNEGO info on negprot rsp (bsc#1190317).
• SMB3.1.1: update comments clarifying SPNEGO info in negprot response (bsc#1190317).
• SMB3: Add new info level for query directory (bsc#1190317).
• SMB3: Add support for getting and setting SACLs (bsc#1190317).
• SMB3: Fix mkdir when idsfromsid configured on mount (bsc#1190317).
• SMB3: Resolve data corruption of TCP server info fields (bsc#1190317).
• SMB3: add support for recognizing WSL reparse tags (bsc#1190317).
• SMB3: avoid confusing warning message on mount to Azure (bsc#1190317).
• SMB3: fix readpage for large swap cache (bsc#1190317).
• SMB3: incorrect file id in requests compounded with open (bsc#1190317).
• SMB3: update structures for new compression protocol definitions (bsc#1190317).
• USB: cdc-acm: fix break reporting (git-fixes).
• USB: cdc-acm: fix racy tty buffer accesses (git-fixes).
• USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter (git-fixes).
• USB: serial: option: add Telit LN920 compositions…

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free inside hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).

The following non-security bugs were fixed:

• IB/hfi1: Fix abba locking issue with sc_disable() (git-fixes)
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• NFS: Do uncached readdir when we're seeking a cookie in an empty page cache (bsc#1191628).
• NFS: Fix backport error - dir_cookie is a pointer to a u64, not a u64.
• PM: base: power: do not try to use non-existing RTC for storing data (git-fixes).
• SMB3.1.1: Fix ids returned in POSIX query dir (bsc#1190317).
• SMB3.1.1: do not log warning message if server does not populate salt (bsc#1190317).
• SMB3.1.1: fix mount failure to some servers when compression enabled (bsc#1190317).
• SMB3.1.1: remove confusing mount warning when no SPNEGO info on negprot rsp (bsc#1190317).
• SMB3.1.1: update comments clarifying SPNEGO info in negprot response (bsc#1190317).
• SMB3: Add new info level for query directory (bsc#1190317).
• SMB3: Add support for getting and setting SACLs (bsc#1190317).
• SMB3: Fix mkdir when idsfromsid configured on mount (bsc#1190317).
• SMB3: Resolve data corruption of TCP server info fields (bsc#1190317).
• SMB3: add support for recognizing WSL reparse tags (bsc#1190317).
• SMB3: avoid confusing warning message on mount to Azure (bsc#1190317).
• SMB3: fix readpage for large swap cache (bsc#1190317).
• SMB3: incorrect file id in requests compounded with open (bsc#1190317).
• SMB3: update structures for new compression protocol definitions (bsc#1190317).
• USB: cdc-acm: fix break reporting (git-fixes).
• USB: cdc-acm: fix racy tty buffer accesses (git-fixes).
• USB: iowarrior: fix control-message timeouts (git-fixes).
• USB: serial: cp210x: add ID for GW Instek GDM-834x Digital Multimeter (git-fixes).
• USB: serial: keyspan: fix memleak on probe errors (git-fixes).
• USB: serial: option: add Telit LN920 compositions (git-fixes).
• USB: serial: option:…

The SUSE Linux Enterprise 15 SP3 kernel for Azure was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

The following non-security bugs were fixed:

• ABI: sysfs-kernel-slab: Document some stats (git-fixes).
• ALSA: hda: fix general protection fault in azx_runtime_idle (git-fixes).
• ALSA: hda: Free card instance properly at probe errors (git-fixes).
• ALSA: hda/realtek: Fix mic mute LED for the HP Spectre x360 14 (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: hda: Use position buffer for SKL+ again (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA: uapi: Fix a C++ style comment in asound.h (git-fixes).
• ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Add minimal-mute notion in dB mapping table (bsc#1192375).
• ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Fix dB level of Bose Revolve+ SoundLink (bsc#1192375).
• ALSA: usb-audio: Use int for dB map values (bsc#1192375).
• ARM: socfpga: Fix crash with CONFIG_FORTIRY_SOURCE (bsc#1192473).
• ASoC: cs42l42: Correct some register default values (git-fixes).
• ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER (git-fixes).
• ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
• ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
• ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
• ASoC: rockchip: Use generic dmaengine code (git-fixes).
• ASoC: SOF: topology: do not power down primary core during topology removal (git-fixes).
• ASoC: topology: Fix stub for snd_soc_tplg_component_remove() (git-fixes).
• ata: sata_mv: Fix the error handling of mv_chip_id() (git-fixes).
• ath10k: fix control-message timeout (git-fixes).
• ath10k: fix division by zero in send path (git-fixes).
• ath10k: fix max antenna gain unit (git-fixes).
• ath10k: Fix missing frame timestamp for beacon/probe-resp (git-fixes).
• ath10k: sdio: Add missing BH locking around napi_schdule() (git-fixes).
• ath6kl: fix control-message timeout (git-fixes).
• ath6kl: fix division by zero in send path (git-fixes).
• ath9k: Fix potential interrupt storm on queue reset (git-fixes).
• auxdisplay: ht16k33: Connect backlight to fbdev (git-fixes).
• auxdisplay: ht16k33: Fix frame buffer device blanking (git-fixes). -…

The SUSE Linux Enterprise 15 SP2 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

The following non-security bugs were fixed:

• ABI: sysfs-kernel-slab: Document some stats (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table (git-fixes).
• ASoC: cs42l42: Correct some register default values (git-fixes).
• ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER (git-fixes).
• ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
• ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
• ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
• ASoC: rockchip: Use generic dmaengine code (git-fixes).
• Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync (git-fixes).
• Bluetooth: fix init and cleanup of sco_conn.timeout_work (git-fixes).
• EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell (bsc#1152489).
• Eradicate Patch-mainline: No The pre-commit check can reject this deprecated tag then.
• Fix problem with missing installkernel on Tumbleweed.
• HID: u2fzero: clarify error check and length calculations (git-fixes).
• HID: u2fzero: properly handle timeouts in usb_submit_urb (git-fixes).
• Input: elantench - fix misreporting trackpoint coordinates (bsc#1192918).
• Input: i8042 - Add quirk for Fujitsu Lifebook T725 (bsc#1191980).
• PCI/ACPI: Check for _OSC support in acpi_pci_osc_control_set() (bsc#1169263).
• PCI/ACPI: Clarify message about _OSC failure (bsc#1169263).
• PCI/ACPI: Move _OSC query checks to separate function (bsc#1169263).
• PCI/ACPI: Move supported and control calculations to separate functions (bsc#1169263).
• PCI/ACPI: Remove OSC_PCI_SUPPORT_MASKS and OSC_PCI_CONTROL_MASKS (bsc#1169263).
• PCI/ACPI: Remove unnecessary osc_lock (bsc#1169263).
• PCI: aardvark: Do not clear status bits of masked interrupts (git-fixes).
• PCI: aardvark: Do not spam about PIO Response Status (git-fixes).
• PCI: aardvark: Do not unmask unused interrupts (git-fixes).
• PCI: aardvark: Fix checking for link up via LTSSM state (git-fixes).
• PCI: aardvark: Fix reporting Data Link Layer Link Active (git-fixes).
• PCI: aardvark: Fix return value of…

The SUSE Linux Enterprise 12 SP5 Azure kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

The following non-security bugs were fixed:

• EDAC/sb_edac: Fix top-of-high-memory value for Broadwell/Haswell (bsc#1114648).
• Revert 'ibmvnic: check failover_pending in login response' (bsc#1190523 ltc#194510).
• Revert 'x86/kvm: fix vcpu-id indexed array sizes' (git-fixes).
• USB: iowarrior: fix control-message timeouts (git-fixes).
• USB: serial: keyspan: fix memleak on probe errors (git-fixes).
• arm64/sve: Use correct size when reinitialising SVE state (git-fixes).
• arm64: pgtable: make __pte_to_phys/__phys_to_pte_val inline functions (git-fixes).
• bpf: Fix potential race in tail call compatibility check (git-fixes).
• bpf: Move owner type, jited info into array auxiliary data (bsc#1141655).
• bpf: Use kvmalloc for map values in syscall (stable-5.14.16).
• btrfs: fix memory ordering between normal and ordered work functions (git-fixes).
• ceph: take snap_empty_lock atomically with snaprealm refcount change (bsc#1191888).
• config.sh: Build cve/linux-4.12 against SLE15-SP1. SLE15 is no longer updated and we will need recent update to suse-module-tools to continue building the kernel.
• crypto: qat - detect PFVF collision after ACK (git-fixes).
• crypto: qat - disregard spurious PFVF interrupts (git-fixes).
• crypto: s5p-sss - Add error handling in s5p_aes_probe() (git-fixes).
• drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() (git-fixes).
• drm: fix spectre issue in vmw_execbuf_ioctl (bsc#1192802).
• ethernet: dwmac-stm32: Fix copyright (git-fixes).
• ftrace: Fix scripts/recordmcount.pl due to new binutils (bsc#1192267).
• fuse: fix page stealing (bsc#1192718).
• gigaset: fix spectre issue in do_data_b3_req (bsc#1192802).
• hisax: fix spectre issues (bsc#1192802).
• hrtimer: Move copyout of remaining time to do_nanosleep() (bsc#1191713).
• hrtimer_nanosleep(): Pass rmtp in restart_block (bsc#1191713).
• hysdn: fix spectre issue in hycapi_send_message (bsc#1192802).
• i2c: synquacer: fix deferred probing (git-fixes).
• ibmvnic: Process crqs after enabling interrupts (bsc#1192273 ltc#194629).
• ibmvnic: check failover_pending in login response (bsc#1190523 ltc#194510).
• ibmvnic: delay complete() (bsc#1094840 ltc#167098 git-fixes).
• ibmvnic: do not stop queue in xmit (bsc#1192273 ltc#194629).
• infiniband: fix spectre issue in ib_uverbs_write (bsc#1192802).
• ipv4: fix…

The SUSE Linux Enterprise 15 SP1 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value (bnc#1186109 bnc#1186390 bnc#1188876).

• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).

• CVE-2021-42739: The firewire subsystem in the Linux kernel has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bnc#1184673).

• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel Local attackers able to access the Aspeed LPC control interface could overwrite memory in…

The SUSE Linux Enterprise 12 SP2 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may have allowed unauthorized disclosure of information to an attacker with local user access via a side-channel analysis (bnc#1068032). Additional spectrev1 fixes were added to the eBPF code.

• CVE-2018-13405: The inode_init_owner function in fs/inode.c allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1087082 bnc#1100416 bnc#1129735).

• CVE-2018-16882: A use-after-free issue was found in the way the KVM hypervisor processed posted interrupts when nested(=1) virtualization is enabled. In nested_get_vmcs12_pages(), in case of an error while processing posted interrupt address, it unmaps the 'pi_desc_page' without resetting 'pi_desc' descriptor address, which is later used in pi_test_and_clear_on(). A guest user/process could use this flaw to crash the host kernel resulting in DoS or potentially gain privileged access to a system. Kernel versions and are vulnerable (bnc#1119934).

• CVE-2020-0429: In l2tp_session_delete and related functions of l2tp_core.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1176724).

• CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c in the Linux kernel Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2020-14305: An out-of-bounds memory write flaw was found in how the Linux kernel’s Voice Over IP H.323 connection tracking functionality handled connections on ipv6 port 1720. This flaw allowed an unauthenticated remote user to crash the system, causing a denial of service. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability (bnc#1173346).

• CVE-2020-3702: Specifically timed and handcrafted traffic can cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure over the air for a discrete set of traffic (bnc#1191193).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-33033: The Linux kernel has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO…

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

The following non-security bugs were fixed:

• ABI: sysfs-kernel-slab: Document some stats (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table (git-fixes).
• ASoC: cs42l42: Correct some register default values (git-fixes).
• ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER (git-fixes).
• ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
• ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
• ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
• ASoC: rockchip: Use generic dmaengine code (git-fixes).
• ata: sata_mv: Fix the error handling of mv_chip_id() (git-fixes).
• ath10k: fix control-message timeout (git-fixes).
• ath10k: fix division by zero in send path (git-fixes).
• ath10k: fix max antenna gain unit (git-fixes).
• ath10k: Fix missing frame timestamp for beacon/probe-resp (git-fixes).
• ath6kl: fix control-message timeout (git-fixes).
• ath6kl: fix division by zero in send path (git-fixes).
• ath9k: Fix potential interrupt storm on queue reset (git-fixes).
• auxdisplay: ht16k33: Connect backlight to fbdev (git-fixes).
• auxdisplay: ht16k33: Fix frame buffer device blanking (git-fixes).
• auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string (git-fixes).
• b43: fix a lower bounds test (git-fixes).
• b43legacy: fix a lower bounds test (git-fixes).
• Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync (git-fixes).
• Bluetooth: fix init and cleanup of sco_conn.timeout_work (git-fixes).
• bpf: Add kconfig knob for disabling unpriv bpf by default (jsc#SLE-22573)
• bpf: Disallow unprivileged bpf by default (jsc#SLE-22573).
• bpf: Fix potential race in tail call compatibility check (git-fixes).
• btrfs: block-group: Rework documentation of check_system_chunk function (bsc#1192896).
• btrfs: fix deadlock between chunk allocation and chunk btree modifications (bsc#1192896).
• btrfs: fix memory ordering between normal and ordered work functions (git-fixes).
• btrfs: update comments for chunk allocation -ENOSPC cases (bsc#1192896).
• cgroup/cpuset:…

The SUSE Linux Enterprise 12 SP3 LTSS kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2020-12655: An issue was discovered in xfs_agf_verify in fs/xfs/libxfs/xfs_alloc.c. Attackers may trigger a sync of excessive duration via an XFS v5 image with crafted metadata, aka CID-d0c7feaf8767 (bnc#1171217).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2021-34556: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because the protection mechanism neglects the possibility of uninitialized memory locations on the BPF stack (bnc#1188983).

• CVE-2021-35477: An unprivileged BPF program can obtain sensitive information from kernel memory via a Speculative Store Bypass side-channel attack because a certain preempting store operation did not necessarily occur before a store operation that has an attacker-controlled value (bnc#1188985).

• CVE-2017-17862: kernel/bpf/verifier.c in the Linux kernel ignores unreachable code, even though it would still be processed by JIT compilers. This behavior, also considered an improper branch-pruning logic issue, could possibly be used by local users for denial of service (bnc#1073928).

• CVE-2017-17864: kernel/bpf/verifier.c in the Linux kernel mishandled states_equal comparisons between the pointer data type and the UNKNOWN_VALUE data type, which allowed local users to obtain potentially sensitive address information, aka a 'pointer leak (bnc#1073928).

• CVE-2021-20265: A flaw was found in the way memory resources were freed in the unix_stream_recvmsg function in the Linux kernel when a signal was pending. This flaw allowed an unprivileged local user to crash the system by exhausting available memory. The highest threat from this vulnerability is to system availability (bnc#1183089).

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).

• CVE-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563).

• CVE-2018-13405: The inode_init_owner function in fs/inode.c in the Linux kernel allowed local users to create files with an unintended group ownership, in a scenario where a directory is SGID to a certain group and is writable by a user who is not a member of that group. Here, the non-member can trigger creation of a plain file whose group ownership is that group. The intended behavior was that the non-member can trigger creation of a directory (but not a plain file) whose group ownership is that group. The non-member can escalate privileges by making the plain file executable and SGID (bnc#1100416 bnc#1129735).

• CVE-2021-3760: Fixed a use-after-free…

The SUSE Linux Enterprise 15 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573) You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2018-3639: Fixed a speculative execution that may allow unauthorized disclosure of information to an attacker with local user access via a side-channel analysis. (bsc#1087082)
• CVE-2021-20320: Fix a bug that allows a local attacker with special user privilege can circumvent the verifier and may lead to a confidentiality problem. (bsc#1190601)
• CVE-2021-0941: Fixed A missing sanity check to the current MTU check that may allow a local attacker with special user privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. (bnc#1192045)
• CVE-2021-31916: Fixed a bound check failure that could allows an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash, a leak of internal kernel information, or a privilege escalation problem. (bnc#1192781)
• CVE-2021-20322: Fixed a bug that provides to an attacker the ability to quickly scan open UDP ports. (bsc#1191790)
• CVE-2021-3772: Fixed an issue that would allow a blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (bsc#1190351)
• CVE-2021-34981: Fixed an issue that allows an attacker with a local account to escalate privileges when CAPI (ISDN) hardware connection fails. (bsc#1191961)
• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications (bnc#1129898).
• CVE-2019-3900: Fixed an infinite loop issue while handling incoming packets in handle_rx() (bnc#1133374).
• CVE-2020-12770: Fixed sg_remove_request call in a certain failure cases (bsc#1171420).
• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-22543: Fixed improper handling of VM_IO|VM_PFNMAP vmas in KVM, which could bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allowed users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation (bsc#1186482).
• CVE-2021-33033: Fixed a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled (bsc#1186109).
• CVE-2021-34556: Fixed side-channel attack via a Speculative Store Bypass via unprivileged BPF program that could have obtain sensitive information from kernel memory (bsc#1188983).
• CVE-2021-35477: Fixed BPF stack frame pointer which could have been abused to disclose content of arbitrary kernel memory (bsc#1188985).
• CVE-2021-3640: Fixed a Use-After-Free vulnerability in function sco_sock_sendmsg() in the bluetooth stack (bsc#1188172).
• CVE-2021-3653: Missing validation of the int_ctl VMCB field and allows a malicious L1 guest to enable AVIC support for the L2 guest. (bsc#1189399).
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3656: Missing validation of the the virt_ext VMCB field and allows a malicious L1 guest to disable both VMLOAD/VMSAVE intercepts and VLS for the L2 guest (bsc#1189400). -…

The SUSE Linux Enterprise 12 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

The following security bugs were fixed:

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).
• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).
• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)
• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails. (bsc#1191961)
• CVE-2021-3655: Fixed a missing size validations on inbound SCTP packets, which may have allowed the kernel to read uninitialized memory (bsc#1188563).
• CVE-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-3760: Fixed a use-after-free vulnerability with the ndev->rf_conn_info object (bsc#1190067).
• CVE-2021-42739: The firewire subsystem had a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandled bounds checking (bsc#1184673).
• CVE-2021-3542: Fixed heap buffer overflow in firedtv driver (bsc#1186063).
• CVE-2021-42252: Fixed an issue inside aspeed_lpc_ctrl_mmap that could have allowed local attackers to access the Aspeed LPC control interface to overwrite memory in the kernel and potentially execute privileges (bnc#1190479).
• CVE-2021-41864: Fixed prealloc_elems_and_freelist that allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• CVE-2021-42008: Fixed a slab out-of-bounds write in the decode_data function in drivers/net/hamradio/6pack.c. Input from a process that had the CAP_NET_ADMIN capability could have lead to root access (bsc#1191315).
• CVE-2021-37159: Fixed use-after-free and a double free inside hso_free_net_device in drivers/net/usb/hso.c when unregister_netdev is called without checking for the NETREG_REGISTERED state (bnc#1188601).
• CVE-2020-3702: Fixed a bug which could be triggered with specifically timed and handcrafted traffic and cause internal errors in a WLAN device that lead to improper layer 2 Wi-Fi encryption with a consequent possibility of information disclosure. (bnc#1191193)
• CVE-2021-3752: Fixed a use after free vulnerability in the Linux kernel's bluetooth module. (bsc#1190023)
• CVE-2021-40490: Fixed a race condition discovered in the ext4 subsystem that could leat to local priviledge escalation. (bnc#1190159)
• CVE-2021-3744: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1189884)
• CVE-2021-3764: Fixed a bug which could allows attackers to cause a denial of service. (bsc#1190534)
• CVE-2021-3772: Fixed a remote denial of service in the SCTP stack, if the attacker can spoof IP addresses and knows the IP-addresses and port numbers being used (bnc#1190351).
• CVE-2018-9517: Fixed possible memory corruption due to a use after free in pppol2tp_connect (bsc#1108488).
• CVE-2019-3874: Fixed possible denial of service attack via SCTP socket buffer used by a userspace applications…

The SUSE Linux Enterprise 15 SP2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• Unprivileged BPF has been disabled by default to reduce attack surface as too many security issues have happened in the past (jsc#SLE-22573)

  You can reenable via systemctl setting /proc/sys/kernel/unprivileged_bpf_disabled to 0. (kernel.unprivileged_bpf_disabled = 0)

• CVE-2021-0941: In bpf_skb_change_head of filter.c, there is a possible out of bounds read due to a use after free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1192045).

• CVE-2021-31916: An out-of-bounds (OOB) memory write flaw was found in list_devices in drivers/md/dm-ioctl.c in the Multi-device driver module in the Linux kernel A bound check failure allowed an attacker with special user (CAP_SYS_ADMIN) privilege to gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability (bnc#1192781).

• CVE-2021-20322: Make the ipv4 and ipv6 ICMP exception caches less predictive to avoid information leaks about UDP ports in use. (bsc#1191790)

• CVE-2021-34981: Fixed file refcounting in cmtp when cmtp_attach_device fails (bsc#1191961).

• CVE-2021-43389: There was an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).

• CVE-2021-37159: hso_free_net_device in drivers/net/usb/hso.c called unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free (bnc#1188601).

• CVE-2020-27820: Fixed a use-after-free in nouveau's postclose() handler that could have happened during device or driver removal (bnc#1179599).

The following non-security bugs were fixed:

• ABI: sysfs-kernel-slab: Document some stats (git-fixes).
• ALSA: hda: Reduce udelay() at SKL+ position reporting (git-fixes).
• ALSA: ua101: fix division by zero at probe (git-fixes).
• ALSA: usb-audio: Add Audient iD14 to mixer map quirk table (git-fixes).
• ALSA: usb-audio: Add Schiit Hel device to mixer map quirk table (git-fixes).
• ASoC: cs42l42: Correct some register default values (git-fixes).
• ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER (git-fixes).
• ASoC: cs42l42: Do not set defaults for volatile registers (git-fixes).
• ASoC: dt-bindings: cs42l42: Correct description of ts-inv (git-fixes).
• ASoC: mediatek: mt8195: Remove unsued irqs_lock (git-fixes).
• ASoC: rockchip: Use generic dmaengine code (git-fixes).
• ata: sata_mv: Fix the error handling of mv_chip_id() (git-fixes).
• ath10k: fix control-message timeout (git-fixes).
• ath10k: fix division by zero in send path (git-fixes).
• ath10k: fix max antenna gain unit (git-fixes).
• ath10k: Fix missing frame timestamp for beacon/probe-resp (git-fixes).
• ath6kl: fix control-message timeout (git-fixes).
• ath6kl: fix division by zero in send path (git-fixes).
• ath9k: Fix potential interrupt storm on queue reset (git-fixes).
• auxdisplay: ht16k33: Connect backlight to fbdev (git-fixes).
• auxdisplay: ht16k33: Fix frame buffer device blanking (git-fixes).
• auxdisplay: img-ascii-lcd: Fix lock-up when displaying empty string (git-fixes).
• b43: fix a lower bounds test (git-fixes).
• b43legacy: fix a lower bounds test (git-fixes).
• Bluetooth: btmtkuart: fix a memleak in mtk_hci_wmt_sync (git-fixes).
• Bluetooth: fix init and cleanup of sco_conn.timeout_work (git-fixes).
• bnxt_en: reject indirect blk offload when hw-tc-offload is off (jsc#SLE-8372 bsc#1153275).
• bpf: Add kconfig knob for disabling unpriv bpf by default (jsc#SLE-22573)
• bpf: Disallow unprivileged bpf by default (jsc#SLE-22573).
• bpf: Fix potential race in tail call compatibility check (git-fixes).
• btrfs: block-group: Rework documentation of check_system_chunk function (bsc#1192896).
• btrfs: do not ignore error…

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2021-22543: Fixed improper handling of VM_IO|VM_PFNMAP vmas in KVM (bsc#1186482).
• CVE-2021-47634: ubi: Fix race condition between ctrl_cdev_ioctl and ubi_cdev_ioctl (bsc#1237758).
• CVE-2021-47644: media: staging: media: zoran: move videodev alloc (bsc#1237766).
• CVE-2022-48953: rtc: cmos: fix build on non-ACPI platforms (bsc#1231941).
• CVE-2022-48975: gpiolib: fix memory leak in gpiochip_setup_dev() (bsc#1231885).
• CVE-2022-49006: tracing: Free buffers when a used dynamic event is removed (bsc#1232163).
• CVE-2022-49076: RDMA/hfi1: Fix use-after-free bug for mm struct (bsc#1237738).
• CVE-2022-49080: mm/mempolicy: fix mpol_new leak in shared_policy_replace (bsc#1238033).
• CVE-2022-49089: IB/rdmavt: add lock to call to rvt_error_qp to prevent a race condition (bsc#1238041).
• CVE-2022-49124: x86/mce: Work around an erratum on fast string copy instructions (bsc#1238148).
• CVE-2022-49134: mlxsw: spectrum: Guard against invalid local ports (bsc#1237982).
• CVE-2022-49135: drm/amd/display: Fix memory leak (bsc#1238006).
• CVE-2022-49151: can: mcba_usb: properly check endpoint type (bsc#1237778).
• CVE-2022-49178: memstick/mspro_block: fix handling of read-only devices (bsc#1238107).
• CVE-2022-49182: net: hns3: add vlan list lock to protect vlan list (bsc#1238260).
• CVE-2022-49201: ibmvnic: fix race between xmit and reset (bsc#1238256).
• CVE-2022-49247: media: stk1160: If start stream fails, return buffers with VB2_BUF_STATE_QUEUED (bsc#1237783).
• CVE-2022-49490: drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is (bsc#1238275).
• CVE-2022-49626: sfc: fix use after free when disabling sriov (bsc#1238270).
• CVE-2022-49661: can: gs_usb: gs_usb_open/close(): fix memory leak (bsc#1237788).
• CVE-2023-52572: Fixed UAF in cifs_demultiplex_thread() in cifs (bsc#1220946).
• CVE-2023-52853: hid: cp2112: Fix duplicate workqueue initialization (bsc#1224988).
• CVE-2023-52924: netfilter: nf_tables: do not skip expired elements during walk (bsc#1236821).
• CVE-2023-6606: Fixed an out of bounds read in the SMB client when receiving a malformed length from a server (bsc#1217947).
• CVE-2024-23307: Fixed Integer Overflow or Wraparound vulnerability in x86 and ARM md, raid, raid5 modules (bsc#1219169).
• CVE-2024-27397: netfilter: nf_tables: use timestamp to check for set element timeout (bsc#1224095).
• CVE-2024-49963: mailbox: bcm2835: Fix timeout during suspend mode (bsc#1232147).
• CVE-2024-49975: uprobes: fix kernel info leak via '[uprobes]' vma (bsc#1232104).
• CVE-2024-50036: net: do not delay dst_entries_add() in dst_release() (bsc#1231912).
• CVE-2024-50067: uprobe: avoid out-of-bounds memory access of fetching args (bsc#1232416).
• CVE-2024-50251: netfilter: nft_payload: sanitize offset and length before calling skb_checksum() (bsc#1233248).
• CVE-2024-50304: ipv4: ip_tunnel: Fix suspicious RCU usage warning in ip_tunnel_find() (bsc#1233522).
• CVE-2024-53217: nfsd: restore callback functionality for NFSv4.0 (bsc#1234999).
• CVE-2024-56633: bpf, sockmap: Fix repeated calls to sock_put() when msg has more_data (bsc#1235485).
• CVE-2024-56647: net: Fix icmp host relookup triggering ip_rt_bug (bsc#1235435).
• CVE-2024-56658: net: defer final 'struct net' free in netns dismantle (bsc#1235441).
• CVE-2024-56688: sunrpc: clear XPRT_SOCK_UPD_TIMEOUT when reset transport (bsc#1235538).
• CVE-2025-21638: sctp: sysctl: auth_enable: avoid using current->nsproxy (bsc#1236115).
• CVE-2025-21639: sctp: sysctl: rto_min/max: avoid using current->nsproxy (bsc#1236122).
• CVE-2025-21640: sctp: sysctl: cookie_hmac_alg: avoid using current->nsproxy (bsc#1236123).
• CVE-2025-21673: smb: client: fix double free of TCP_Server_Info::hostname (bsc#1236689).
• CVE-2025-21689: USB: serial: quatech2: fix null-ptr-deref in qt2_process_read_urb() (bsc#1237017).
• CVE-2025-21690: scsi: storvsc:…

Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. (CVE-2021-41073)

Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. (CVE-2021-33624)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

Alexey Kardashevskiy discovered that the KVM implementation for PowerPC systems in the Linux kernel did not properly validate RTAS arguments in some situations. An attacker in a guest vm could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code. (CVE-2021-37576)

It was discovered that the Virtio console implementation in the Linux kernel did not properly validate input lengths in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38160)

Michael Wakabayashi discovered that the NFSv4 client implementation in the Linux kernel did not properly order connection setup operations. An attacker controlling a remote NFS server could use this to cause a denial of service on the client. (CVE-2021-38199)

It was discovered that the Sun RPC implementation in the Linux kernel contained an out-of-bounds access error. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38201)

It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204)

It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205)

Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. (CVE-2021-41073)

Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. (CVE-2021-33624)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

Alexey Kardashevskiy discovered that the KVM implementation for PowerPC systems in the Linux kernel did not properly validate RTAS arguments in some situations. An attacker in a guest vm could use this to cause a denial of service (host OS crash) or possibly execute arbitrary code. (CVE-2021-37576)

It was discovered that the Virtio console implementation in the Linux kernel did not properly validate input lengths in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38160)

Michael Wakabayashi discovered that the NFSv4 client implementation in the Linux kernel did not properly order connection setup operations. An attacker controlling a remote NFS server could use this to cause a denial of service on the client. (CVE-2021-38199)

It was discovered that the Sun RPC implementation in the Linux kernel contained an out-of-bounds access error. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38201)

It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204)

It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205)

Valentina Palmiotti discovered that the io_uring subsystem in the Linux kernel could be coerced to free adjacent memory. A local attacker could use this to execute arbitrary code. (CVE-2021-41073)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

Murray McAllister discovered that the joystick device interface in the Linux kernel did not properly validate data passed via an ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code on systems with a joystick device registered. (CVE-2021-3612)

It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732)

It was discovered that the Virtio console implementation in the Linux kernel did not properly validate input lengths in some situations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38160)

It was discovered that the BPF subsystem in the Linux kernel contained an integer overflow in its hash table implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-38166)

Michael Wakabayashi discovered that the NFSv4 client implementation in the Linux kernel did not properly order connection setup operations. An attacker controlling a remote NFS server could use this to cause a denial of service on the client. (CVE-2021-38199)

It was discovered that the Sun RPC implementation in the Linux kernel contained an out-of-bounds access error. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38201)

It was discovered that the NFS server implementation in the Linux kernel contained an out-of-bounds read when the trace even framework is being used for nfsd. A remote attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-38202)

Naohiro Aota discovered that the btrfs file system in the Linux kernel contained a race condition in situations that triggered allocations of new system chunks. A local attacker could possibly use this to cause a denial of service (deadlock). (CVE-2021-38203)

It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204)

It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205)

It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490)

It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702)

Ofek Kirzner, Adam Morrison, Benedict Schlueter, and Piotr Krysiuk discovered that the BPF verifier in the Linux kernel missed possible mispredicted branches due to type confusion, allowing a side-channel attack. An attacker could use this to expose sensitive information. (CVE-2021-33624)

Benedict Schlueter discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side- channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-34556)

Piotr Krysiuk discovered that the BPF subsystem in the Linux kernel did not properly protect against Speculative Store Bypass (SSB) side-channel attacks in some situations. A local attacker could possibly use this to expose sensitive information. (CVE-2021-35477)

It was discovered that the tracing subsystem in the Linux kernel did not properly keep track of per-cpu ring buffer state. A privileged attacker could use this to cause a denial of service. (CVE-2021-3679)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

Alois Wohlschlager discovered that the overlay file system in the Linux kernel did not restrict private clones in some situations. An attacker could use this to expose sensitive information. (CVE-2021-3732)

It was discovered that the btrfs file system in the Linux kernel did not properly handle removing a non-existent device id. An attacker with CAP_SYS_ADMIN could use this to cause a denial of service. (CVE-2021-3739)

It was discovered that the Qualcomm IPC Router protocol implementation in the Linux kernel did not properly validate metadata in some situations. A local attacker could use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2021-3743)

It was discovered that the virtual terminal (vt) device implementation in the Linux kernel contained a race condition in its ioctl handling that led to an out-of-bounds read vulnerability. A local attacker could possibly use this to expose sensitive information. (CVE-2021-3753)

It was discovered that the Linux kernel did not properly account for the memory usage of certain IPC objects. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3759)

It was discovered that the BPF subsystem in the Linux kernel contained an integer overflow in its hash table implementation. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-38166)

It was discovered that the MAX-3421 host USB device driver in the Linux kernel did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-38204)

It was discovered that the Xilinx 10/100 Ethernet Lite device driver in the Linux kernel could report pointer addresses in some situations. An attacker could use this information to ease the exploitation of another vulnerability. (CVE-2021-38205)

It was discovered that the ext4 file system in the Linux kernel contained a race condition when writing xattrs to an inode. A local attacker could use this to cause a denial of service or possibly gain administrative privileges. (CVE-2021-40490)

It was discovered that the 6pack network protocol driver in the Linux kernel did not properly perform validation checks. A privileged attacker could use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-42008)

Ilja Van Sprundel discovered that the SCTP implementation in the Linux kernel did not properly perform size validations on incoming packets in some situations. An attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2021-3655)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3744, CVE-2021-3764)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the AMD Cryptographic Coprocessor (CCP) driver in the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2021-3744, CVE-2021-3764)

It was discovered that the VFIO PCI driver in the Linux kernel did not properly handle attempts to access disabled memory spaces. A local attacker could use this to cause a denial of service (system crash). (CVE-2020-12888)

Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation did not properly verify certain fragmented frames. A physically proximate attacker could possibly use this issue to inject or decrypt packets. (CVE-2020-26141)

Mathy Vanhoef discovered that the Linux kernel’s WiFi implementation accepted plaintext fragments in certain situations. A physically proximate attacker could use this issue to inject packets. (CVE-2020-26145)

It was discovered that a race condition existed in the Atheros Ath9k WiFi driver in the Linux kernel. An attacker could possibly use this to expose sensitive information (WiFi network traffic). (CVE-2020-3702)

It was discovered a race condition existed in the Unix domain socket implementation in the Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-0920)

It was discovered that the IPv6 implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-0935)

Zygo Blaxell discovered that the btrfs file system implementation in the Linux kernel contained a race condition during certain cloning operations. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2021-28964)

Dan Carpenter discovered that the block device manager (dm) implementation in the Linux kernel contained a buffer overflow in the ioctl for listing devices. A privileged local attacker could use this to cause a denial of service (system crash). (CVE-2021-31916)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

It was discovered that the network packet filtering implementation in the Linux kernel did not properly initialize information in certain circumstances. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2021-39636)

Jann Horn discovered a race condition in the Unix domain socket implementation in the Linux kernel that could result in a read-after-free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4083)

Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel did not properly perform bounds checking in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-42739)

Brendan Dolan-Gavitt discovered that the Marvell WiFi-Ex USB device driver in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2021-43976)

Amit Klein discovered that the IPv4 implementation in the Linux kernel could disclose internal state in some situations. An attacker could possibly use this to expose sensitive information. (CVE-2021-45486)

It was discovered that the Option USB High Speed Mobile device driver in the Linux kernel did not properly handle error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-37159)

A security issue was discovered in the Linux kernel. An attacker could possibly use this to compromise the system. This update corrects flaws in the following subsystem:

• Network drivers; (CVE-2021-46904)