CVE-2021-41864

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

The Linux Kernel, the operating system core itself.

Security Fix(es):

A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large shared memory segment counts which could lead to resource exhaustion and DoS.(CVE-2021-3669)

(CVE-2021-3764)

(CVE-2021-3744)

arch/mips/net/bpf_jit.c in the Linux kernel before 5.4.10 can generate undesirable machine code when transforming unprivileged cBPF programs, allowing execution of arbitrary code within the kernel context. This occurs because conditional branches can exceed the 128 KB limit of the MIPS architecture.(CVE-2021-38300)

A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the system or escalate their privileges. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.(CVE-2021-3752)

A flaw was found in the Linux kernel. A corrupted timer tree caused the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. This flaw allows a local attacker with special user privileges to cause a denial of service, slowing and eventually stopping the system while running OSP.(CVE-2021-20317)

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel through 5.14.9 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.(CVE-2021-41864)

The decode_data function in drivers/net/hamradio/6pack.c in the Linux kernel before 5.13.13 has a slab out-of-bounds write. Input from a process that has the CAP_NET_ADMIN capability can lead to root access.(CVE-2021-42008)

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.

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel before 5.14.12 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write.

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.

• udf: Restore i_lenAlloc when inode expansion fails (Jan Kara) {CVE-2022-0617}
• udf: Fix NULL ptr deref when converting from inline format (Jan Kara) {CVE-2022-0617}
• Bluetooth: fix use-after-free error in lock_sock_nested() (Wang ShaoBo) {CVE-2021-3752}
• vt_kdsetmode: extend console locking (Linus Torvalds) {CVE-2021-3753}
• fget: check that the fd still exists after getting a ref to it (Linus Torvalds) {CVE-2021-4083}
• ipv6: use prandom_u32() for ID generation (Willy Tarreau) {CVE-2021-45485}
• virtio_console: Assure used length from device is limited (Xie Yongji) {CVE-2021-38160}
• bpf: Fix integer overflow in prealloc_elems_and_freelist() (Tatsuhiko Yasumatsu) {CVE-2021-41864}
• ext4: fix race writing to an inline_data file while its xattrs are changing (Theodore Ts'o) {CVE-2021-40490}
• xen-blkback: fix error handling in xen_blkbk_map() (Jan Beulich) {CVE-2021-26930}
• bpf, x86: Validate computation of branch displacements for x86-32 (Piotr Krysiuk) {CVE-2021-29154}
• bpf, x86: Validate computation of branch displacements for x86-64 (Piotr Krysiuk) {CVE-2021-29154}
• tipc: improve size validations for received domain records (Jon Paul Maloy) {CVE-2022-0435}
• cgroup: verify that source is a string (Christian Brauner) {CVE-2021-4154}

• 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…

This kernel update is based on upstream 5.10.75 and fixes at least the following security issues:

A memory leak in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a denial of service (memory consumption) (CVE-2021-3744).

A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an malicious user to cause a denial of service (CVE-2021-3764).

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system (CVE-2021-20321).

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel through 5.14.9 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (CVE-2021-41864).

For other upstream fixes, see the referenced changelogs.

This kernel-linus update is based on upstream 5.10.75 and fixes at least the following security issues:

A memory leak in the ccp_run_aes_gcm_cmd() function in drivers/crypto/ ccp/ccp-ops.c in the Linux kernel allows malicious users to cause a denial of service (memory consumption) (CVE-2021-3744).

A memory leak flaw was found in the Linux kernel's ccp_run_aes_gcm_cmd() function that allows an malicious user to cause a denial of service (CVE-2021-3764).

A race condition accessing file object in the Linux kernel OverlayFS subsystem was found in the way users do rename in specific way with OverlayFS. A local user could use this flaw to crash the system (CVE-2021-20321).

prealloc_elems_and_freelist in kernel/bpf/stackmap.c in the Linux kernel through 5.14.9 allows unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (CVE-2021-41864).

For other upstream fixes, see the referenced changelogs.

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

The following security bugs were fixed:

• 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#1100416 bnc#1129735).
• CVE-2021-33033: The Linux kernel had 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-2021-34556: 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-2021-3655: Missing size validations on inbound SCTP packets may have allowed the kernel to read uninitialized memory (bnc#1188563 bnc#1192267).
• 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: Invalid chunks may be used to remotely remove existing associations (bsc#1190351).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• CVE-2021-41864: prealloc_elems_and_freelist in kernel/bpf/stackmap.c allowed unprivileged users to trigger an eBPF multiplication integer overflow with a resultant out-of-bounds write (bnc#1191317).
• 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-2021-42252: An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c where local attackers were able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes (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 (bnc#1184673 bnc#1192036).
• 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: It allowed a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values (bnc#1192107).

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: Use DEVICE_ATTR_<RW|RO|WO> macros (git-fixes).
• Add cherry-picked commit id to the usb hso fix (git-fixes)
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• ALSA: hda: avoid…

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

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• 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-2021-33033: 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• 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).

The following non-security bugs were fixed:

• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• 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: 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 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: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• 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: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: Intel: Skylake: Fix module configuration for KPB and MIXER (git-fixes).
• ASoC: Intel: Skylake: Fix passing loadable flag for module (git-fixes).
• ASoC: Intel: bytcr_rt5640: Move 'Platform Clock' routes to the maps for the matching in-/output (git-fixes).
• ASoC: Intel: sof_sdw: tag SoundWire BEs as non-atomic (git-fixes).
• ASoC: SOF: imx: imx8: Bar index is only valid for…

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 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 prealloc_elems_and_freelist of stackmap.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

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

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• 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).

The following non-security bugs were fixed:

• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
• HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
• HID: u2fzero: ignore incomplete packets without data (git-fixes).
• HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
• HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (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).
• Input: snvs_pwrkey - add clk handling (git-fixes).
• Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
• KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
• KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
• KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
• KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
• KVM: s390: index kvm->arch.idle_mask by vcpu_idx (bsc#1133021).
• KVM: s390: VSIE: correctly handle MVPG when in VSIE (bsc#1133021).
• KVM: s390: extend kvm_s390_shadow_fault…

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

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• 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-2021-33033: 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• 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).

The following non-security bugs were fixed:

• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• 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: 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 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: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• 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: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: Intel: Skylake: Fix module configuration for KPB and MIXER (git-fixes).
• ASoC: Intel: Skylake: Fix passing loadable flag for module (git-fixes).
• ASoC: Intel: bytcr_rt5640: Move 'Platform Clock' routes to the maps for the matching in-/output (git-fixes).
• ASoC: Intel: sof_sdw: tag SoundWire BEs as non-atomic (git-fixes).
• ASoC: SOF: imx: imx8: Bar index is only valid for…

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

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• 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-2021-33033: 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• CVE-2021-34866: Fixed eBPF Type Confusion Privilege Escalation Vulnerability (bsc#1191645).
• 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).

The following non-security bugs were fixed:

• ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect (git-fixes).
• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda - Enable headphone mic on Dell Latitude laptops with ALC3254 (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• 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: 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 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: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: hda: intel: Allow repeatedly probing on codec configuration errors (bsc#1190801).
• 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: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: Intel: Skylake: Fix module configuration for KPB and MIXER (git-fixes).
• ASoC: Intel: Skylake: Fix passing loadable flag for module (git-fixes).
• ASoC: Intel: bytcr_rt5640: Move 'Platform Clock' routes to the maps for the matching in-/output (git-fixes).
• ASoC: Intel: sof_sdw: tag SoundWire BEs as non-atomic (git-fixes).
• ASoC: SOF: imx: imx8: Bar index is only valid for…

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

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• 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).

The following non-security bugs were fixed:

• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
• HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
• HID: u2fzero: ignore incomplete packets without data (git-fixes).
• HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
• HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (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).
• Input: snvs_pwrkey - add clk handling (git-fixes).
• Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
• KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
• KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
• KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
• KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
• NFC: digital: fix possible memory leak in digital_in_send_sdd_req() (git-fixes).
• NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() (git-fixes).
• NFS:…

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:…

This update for the Linux Kernel 4.12.14-197_99 fixes several issues.

The following security issues were fixed:

• CVE-2021-0935: Fixed use after free that could lead to local escalation of privilege in ip6_xmit of ip6_output.c (bsc#1192042).
• CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 4.12.14-122_91 fixes several issues.

The following security issues were fixed:

• CVE-2021-0935: Fixed use after free that could lead to local escalation of privilege in ip6_xmit of ip6_output.c (bsc#1192042).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-24_53_4 fixes several issues.

The following security issues were fixed:

• CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-24_83 fixes one issue.

The following security issue was fixed:

• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-59_24 fixes several issues.

The following security issues were fixed:

• CVE-2021-34866: Fixed possible eBPF Type Confusion privilege escalation vulnerability via eBPF type confusion (bsc#1191646).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

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…

This update for the Linux Kernel 4.12.14-150_66 fixes several issues.

The following security issues were fixed:

• CVE-2021-0935: Fixed use after free that could lead to local escalation of privilege in ip6_xmit of ip6_output.c (bsc#1192042).
• CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-24_49 fixes several issues.

The following security issues were fixed:

• CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-57 fixes several issues.

The following security issues were fixed:

• CVE-2021-3752: Fixed vulnerability in the linux kernel Bluetooth uaf module (bsc#1190432).
• CVE-2021-34866: Fixed possible eBPF Type Confusion privilege escalation vulnerability via eBPF type confusion (bsc#1191646).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-59_19 fixes several issues.

The following security issues were fixed:

• CVE-2021-34866: Fixed possible eBPF Type Confusion privilege escalation vulnerability via eBPF type confusion (bsc#1191646).
• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

This update for the Linux Kernel 5.3.18-59_27 fixes one issue.

The following security issue was fixed:

• CVE-2021-41864: Fixed an integer overflow with a resultant out-of-bounds write in prealloc_elems_and_freelist in kernel/bpf/stackmap.c (bsc#1191318).

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 SP2 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2021-3772: Fixed sctp vtag check in sctp_sf_ootb (bsc#1190351).
• 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-2021-43056: Fixed possible KVM host crash via malicious KVM guest on Power8 (bnc#1192107).
• CVE-2021-3896: Fixed a array-index-out-bounds in detach_capi_ctr in drivers/isdn/capi/kcapi.c (bsc#1191958).
• 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-2021-3715: Fixed a use-after-free in route4_change() in net/sched/cls_route.c (bsc#1190349).
• 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).

The following non-security bugs were fixed:

• ACPI: bgrt: Fix CFI violation (git-fixes).
• ACPI: fix NULL pointer dereference (git-fixes).
• ALSA: hda/realtek - ALC236 headset MIC recording issue (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PC50HS (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo X170KM-G (git-fixes).
• ALSA: hda/realtek: Complete partial device name to avoid ambiguity (git-fixes).
• ALSA: hda/realtek: Fix the mic type detection issue for ASUS G551JW (git-fixes).
• ALSA: hda: avoid write to STATESTS if controller is in reset (git-fixes).
• ALSA: seq: Fix a potential UAF by wrong private_free call order (git-fixes).
• ALSA: usb-audio: Add quirk for VF0770 (git-fixes).
• ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset (git-fixes).
• ASoC: DAPM: Fix missing kctl change notifications (git-fixes).
• ASoC: wm8960: Fix clock configuration on slave mode (git-fixes).
• Add obsolete_rebuilds_subpackage (boo#1172073 bsc#1191731).
• HID: apple: Fix logical maximum and usage maximum of Magic Keyboard JIS (git-fixes).
• HID: betop: fix slab-out-of-bounds Write in betop_probe (git-fixes).
• HID: u2fzero: ignore incomplete packets without data (git-fixes).
• HID: usbhid: free raw_report buffers in usbhid_stop (git-fixes).
• HID: wacom: Add new Intuos BT (CTL-4100WL/CTL-6100WL) device IDs (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).
• Input: snvs_pwrkey - add clk handling (git-fixes).
• Input: xpad - add support for another USB ID of Nacon GC-100 (git-fixes).
• KVM: PPC: Book3S HV Nested: Reflect guest PMU in-use to L0 when guest SPRs are live (bsc#1156395).
• KVM: PPC: Book3S HV Nested: Sanitise H_ENTER_NESTED TM state (bsc#1156395).
• KVM: PPC: Book3S HV: Save host FSCR in the P7/8 path (bsc#1065729).
• KVM: PPC: Book3S HV: Tolerate treclaim. in fake-suspend mode changing registers (bsc#1156395).
• KVM: PPC: Fix clearing never mapped TCEs in realmode (bsc#1156395).
• KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak (bsc#1156395).
• NFC: digital: fix possible memory leak in digital_in_send_sdd_req() (git-fixes).
• NFC: digital: fix possible memory leak in digital_tg_listen_mdaa() (git-fixes).
• NFS: dir_cookie…

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 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…

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 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 NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760)

It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864)

It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). (CVE-2021-43056)

It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389)

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 an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864)

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. (CVE-2021-4002)

It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-20321)

It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760)

It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864)

It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). (CVE-2021-43056)

It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly validate MSG_CRYPTO messages in some situations. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43267)

It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389)

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. (CVE-2021-4002)

It was discovered that a race condition existed in the timer implementation in the Linux kernel. A privileged attacker could use this to cause a denial of service. (CVE-2021-20317)

It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-20321)

It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760)

It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864)

It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389)

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. (CVE-2021-4002)

It was discovered that the Linux kernel did not properly enforce certain types of entries in the Secure Boot Forbidden Signature Database (aka dbx) protection mechanism. An attacker could use this to bypass UEFI Secure Boot restrictions. (CVE-2020-26541)

It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-20321)

It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760)

It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864)

It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). (CVE-2021-43056)

It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389)

Nadav Amit discovered that the hugetlb implementation in the Linux kernel did not perform TLB flushes under certain conditions. A local attacker could use this to leak or alter data from other processes that use huge pages. (CVE-2021-4002)

It was discovered that the eBPF implementation in the Linux kernel did not properly validate the memory size of certain ring buffer operation arguments. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-4204)

It was discovered that a race condition existed in the overlay file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2021-20321)

It was discovered that the NFC subsystem in the Linux kernel contained a use-after-free vulnerability in its NFC Controller Interface (NCI) implementation. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2021-3760)

It was discovered that an integer overflow could be triggered in the eBPF implementation in the Linux kernel when preallocating objects for stack maps. A privileged local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2021-41864)

It was discovered that the KVM implementation for POWER8 processors in the Linux kernel did not properly keep track if a wakeup event could be resolved by a guest. An attacker in a guest VM could possibly use this to cause a denial of service (host OS crash). (CVE-2021-43056)

It was discovered that the TIPC Protocol implementation in the Linux kernel did not properly validate MSG_CRYPTO messages in some situations. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2021-43267)

It was discovered that the ISDN CAPI implementation in the Linux kernel contained a race condition in certain situations that could trigger an array out-of-bounds bug. A privileged local attacker could possibly use this to cause a denial of service or execute arbitrary code. (CVE-2021-43389)