CVE-2021-20321

The Linux Kernel, the operating system core itself.

Security Fix(es):

A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the memory pages. A local user could use this flaw to get unauthorized access to some data.(CVE-2021-4002)

In unix_scm_to_skb of af_unix.c, there is a possible use after free bug due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-196926917References: Upstream kernel(CVE-2021-0920)

A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create files for the XFS file-system with an unintended group ownership and with group execution and SGID permission bits set, in a scenario where a directory is SGID and belongs to a certain group and is writable by a user who is not a member of this group. This can lead to excessive permissions granted in case when they should not. This vulnerability is similar to the previous CVE-2018-13405 and adds the missed fix for the XFS.(CVE-2021-4037)

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)

In __configfs_open_file of file.c, there is a possible use-after-free due to improper locking. This could lead to local escalation of privilege in the kernel with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-174049066References: Upstream kernel(CVE-2021-39656)

In gadget_dev_desc_UDC_show of configfs.c, there is a possible disclosure of kernel heap memory due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-160822094References: Upstream kernel(CVE-2021-39648)

The issue reported to the Linux security team allowed one to read and/or write up to 65kB of kernel memory past buffer boundaries by exploiting lack of limiting of the usb control transfer request wLength in certain gadget functions.(CVE-2021-39685)

pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.(CVE-2021-45095)

A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem.(CVE-2021-4149)

In the Linux kernel through 5.8.7, local attackers able to inject conntrack netlink configuration could overflow a local buffer, causing crashes or triggering use of incorrect protocol numbers in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c, aka CID-1cc5ef91d2ff.(CVE-2020-25211)

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

Security Fix(es):

• kernel: In Overlayfs missing a check for a negative dentry before calling vfs_rename() (CVE-2021-20321)

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.

Bug Fix(es):

• panic while breaking a lease/delegation after user mode helper invocation (BZ#2010333)

• The ASR driver is causing a system crash in Rocky Linux8.4 compared to Rocky Linux8.3 due to kernel changes (BZ#2016384)

• Rocky Linux8: DFS provided SMB shares are not accessible following unprivileged access (BZ#2017177)

• Avoid hitting the rtnl_trylock/restart_syscall logic in net-sysfs when possible (BZ#2021165)

• Rocky Linux8: x86/Kconfig: Do not enable AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT (BZ#2024678)

• Rocky Linux8.4-[Regression][P10][DD2.0][Rainier/Denali] - system crashed while offlining and onlining cores (BZ#2026450)

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: In Overlayfs missing a check for a negative dentry before calling vfs_rename() (CVE-2021-20321)

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.

Bug Fix(es):

• kernel-rt: update RT source tree to the Rocky Linux-8.5.z1 source tree (BZ#2023988)

• [rt] Rocky Linux-8.6: disable KASAN, KCSAN and UBSAN for kernel-rt (BZ#2026384)

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.

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

Security Fix(es):

• kernel: In Overlayfs missing a check for a negative dentry before calling vfs_rename() (CVE-2021-20321)

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.

Bug Fix(es):

• panic while breaking a lease/delegation after user mode helper invocation (BZ#2010333)

• The ASR driver is causing a system crash in AlmaLinux8.4 compared to AlmaLinux8.3 due to kernel changes (BZ#2016384)

• AlmaLinux8: DFS provided SMB shares are not accessible following unprivileged access (BZ#2017177)

• Avoid hitting the rtnl_trylock/restart_syscall logic in net-sysfs when possible (BZ#2021165)

• AlmaLinux8: x86/Kconfig: Do not enable AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT (BZ#2024678)

• AlmaLinux8.4-[Regression][P10][DD2.0][Rainier/Denali] - system crashed while offlining and onlining cores (BZ#2026450)

• Bionic update: upstream stable patchset 2021-11-12 (LP: #1950816) // CVE- url: https://ubuntu.com/security/CVE-2021-20321
  • ovl: fix missing negative dentry check in ovl_rename()
• CVE-url: https://ubuntu.com/security/CVE-2021-20321
  • ovl: cleanup unused var in rename2
• Jammy update: v5.15.93 upstream stable release (LP: #2012665) // CVE-url: https://ubuntu.com/security/CVE-2023-3161
  • fbcon: Check font dimension limits
• CVE-url: https://ubuntu.com/security/CVE-2021-3753
  • vt_kdsetmode: extend console locking
• Jammy update: v5.15.75 upstream stable release (LP: #1996825) // CVE-url: https://ubuntu.com/security/CVE-2022-1184
  • ext4: fix check for block being out of directory size
• Jammy update: v5.15.61 upstream stable release (LP: #1990162) // CVE-url: https://ubuntu.com/security/CVE-2022-1184
  • ext4: check if directory block is within i_size
• Jammy update: v5.15.104 upstream stable release (LP: #2023225) // CVE-url: https://ubuntu.com/security/CVE-2023-1990
  • nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition
• CVE-url: https://ubuntu.com/security/CVE-2023-3090
  • ipvlan:Fix out-of-bounds caused by unclear skb->cb
• Jammy update: v5.15.63 upstream stable release (LP: #1990564) // CVE-url: https://ubuntu.com/security/CVE-2023-3111
  • btrfs: unset reloc control if transaction commit fails in prepare_to_relocate()
• CVE-url: https://ubuntu.com/security/CVE-2023-3111
  • Btrfs: fill relocation block rsv after allocation
  • btrfs: check return value of btrfs_commit_transaction in relocation
• CVE-url: https://ubuntu.com/security/CVE-2023-3141
  • memstick: r592: Fix UAF bug in r592_remove due to race condition
• CVE-url: https://ubuntu.com/security/CVE-2023-3212
  • gfs2: Don't deref jdesc in evict
• CVE-url: https://ubuntu.com/security/CVE-2023-3268
  • kernel/relay.c: fix read_pos error when multiple readers
  • relayfs: fix out-of-bounds access in relay_file_read
• CVE-url: https://ubuntu.com/security/CVE-2023-3390
  • netfilter: nf_tables: incorrect error path handling with NFT_MSG_NEWRULE
• CVE-url: https://ubuntu.com/security/CVE-2023-35824
  • media: dm1105: Fix use after free bug in dm1105_remove due to race condition

• Bionic update: upstream stable patchset 2021-11-12 (LP: #1950816) // CVE- url: https://ubuntu.com/security/CVE-2021-20321
  • ovl: fix missing negative dentry check in ovl_rename()
• CVE-url: https://ubuntu.com/security/CVE-2021-20321
  • ovl: cleanup unused var in rename2
• Jammy update: v5.15.93 upstream stable release (LP: #2012665) // CVE-url: https://ubuntu.com/security/CVE-2023-3161
  • fbcon: Check font dimension limits
• CVE-url: https://ubuntu.com/security/CVE-2021-3753
  • vt_kdsetmode: extend console locking
• Jammy update: v5.15.75 upstream stable release (LP: #1996825) // CVE-url: https://ubuntu.com/security/CVE-2022-1184
  • ext4: fix check for block being out of directory size
• Jammy update: v5.15.61 upstream stable release (LP: #1990162) // CVE-url: https://ubuntu.com/security/CVE-2022-1184
  • ext4: check if directory block is within i_size
• Jammy update: v5.15.104 upstream stable release (LP: #2023225) // CVE-url: https://ubuntu.com/security/CVE-2023-1990
  • nfc: st-nci: Fix use after free bug in ndlc_remove due to race condition
• CVE-url: https://ubuntu.com/security/CVE-2023-3090
  • ipvlan:Fix out-of-bounds caused by unclear skb->cb
• Jammy update: v5.15.63 upstream stable release (LP: #1990564) // CVE-url: https://ubuntu.com/security/CVE-2023-3111
  • btrfs: unset reloc control if transaction commit fails in prepare_to_relocate()
• CVE-url: https://ubuntu.com/security/CVE-2023-3111
  • Btrfs: fill relocation block rsv after allocation
  • btrfs: check return value of btrfs_commit_transaction in relocation
• CVE-url: https://ubuntu.com/security/CVE-2023-3141
  • memstick: r592: Fix UAF bug in r592_remove due to race condition
• CVE-url: https://ubuntu.com/security/CVE-2023-3212
  • gfs2: Don't deref jdesc in evict
• CVE-url: https://ubuntu.com/security/CVE-2023-3268
  • kernel/relay.c: fix read_pos error when multiple readers
  • relayfs: fix out-of-bounds access in relay_file_read
• CVE-url: https://ubuntu.com/security/CVE-2023-3390
  • netfilter: nf_tables: incorrect error path handling with NFT_MSG_NEWRULE
• CVE-url: https://ubuntu.com/security/CVE-2023-35824
  • media: dm1105: Fix use after free bug in dm1105_remove due to race condition

• 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.

In ovl_rename of dir.c, there is a possible out of bounds write due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

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

The following security bugs were fixed:

• CVE-2018-7755: Fixed an issue in the fd_locked_ioctl function in drivers/block/floppy.c. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR (bnc#1084513).
• CVE-2019-20811: Fixed issue in rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, where a reference count is mishandled (bnc#1172456).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2021-43389: Fixed an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2022-1011: Fixed a use-after-free flaw inside the FUSE filesystem in the way a user triggers write(). This flaw allowed a local user to gain unauthorized access to data from the FUSE filesystem, resulting in privilege escalation (bnc#1197343).
• CVE-2022-1280: Fixed a use-after-free vulnerability in drm_lease_held in drivers/gpu/drm/drm_lease.c (bnc#1197914).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2022-23960: Fixed speculation issues in the Branch History Buffer that allowed an attacker to obtain sensitive information using cache allocation (bnc#1196657).
• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).

The following non-security bugs were fixed:

• IB/qib: Fix memory leak in qib_user_sdma_queue_pkts() (git-fixes)
• NFSD: prevent underflow in nfssvc_decode_writeargs() (git-fixes).
• NFSv4: recover from pre-mature loss of openstateid (bsc#1196247).
• NFSv4: Do not try to CLOSE if the stateid 'other' field has changed (bsc#1196247).
• NFSv4: Fix a regression in nfs_set_open_stateid_locked() (bsc#1196247).
• NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE (bsc#1196247).
• NFSv4: Wait for stateid updates after CLOSE/OPEN_DOWNGRADE (bsc#1196247).
• NFSv4: fix open failure with O_ACCMODE flag (git-fixes).
• PCI/switchtec: Read all 64 bits of part_event_bitmap (git-fixes).
• PCI: Add device even if driver attach failed (git-fixes).
• PCI: Fix overflow in command-line resource alignment requests (git-fixes).
• PCI: iproc: Fix out-of-bound array accesses (git-fixes).
• PCI: iproc: Set affinity mask on MSI interrupts (git-fixes).
• PCI: qcom: Change duplicate PCI reset to phy reset (git-fixes).
• PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0 (git-fixes).
• RDMA/rxe: Missing unlock on error in get_srq_wqe() (git-fixes)
• RDMA/rxe: Restore setting tot_len in the IPv4 header (git-fixes)
• RDMA/rxe: Use the correct size of wqe when processing SRQ (git-fixes)
• SUNRPC: Handle low memory situations in call_status() (git-fixes).
• USB: Fix 'slab-out-of-bounds Write' bug in usb_hcd_poll_rh_status (git-fixes).
• USB: core: Fix bug in resuming hub's handling of wakeup requests (git-fixes).
• USB: serial: cp210x: add NCR Retail IO box id (git-fixes).
• USB: serial: pl2303: add IBM device IDs (git-fixes).
• USB: serial: simple: add Nokia phone driver (git-fixes).
• USB: usb-storage:…

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

The following security bugs were fixed:

• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).
• CVE-2022-28356: Fixed a refcount leak bug found in net/llc/af_llc.c (bnc#1197391).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1280: Fixed a use-after-free vulnerability in drm_lease_held in drivers/gpu/drm/drm_lease.c (bnc#1197914).
• CVE-2022-1011: Fixed a use-after-free flaw inside the FUSE filesystem in the way a user triggers write(). This flaw allowed a local user to gain unauthorized access to data from the FUSE filesystem, resulting in privilege escalation (bnc#1197343).
• CVE-2021-43389: Fixed an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2019-20811: Fixed issue in rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, where a reference count is mishandled (bnc#1172456).
• CVE-2018-7755: Fixed an issue in the fd_locked_ioctl function in drivers/block/floppy.c. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR (bnc#1084513).

The following non-security bugs were fixed:

• IB/qib: Fix memory leak in qib_user_sdma_queue_pkts() (git-fixes)
• NFSD: prevent underflow in nfssvc_decode_writeargs() (git-fixes).
• NFSv4: Do not try to CLOSE if the stateid 'other' field has changed (bsc#1196247).
• NFSv4: Fix a regression in nfs_set_open_stateid_locked() (bsc#1196247).
• NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE (bsc#1196247).
• NFSv4: Wait for stateid updates after CLOSE/OPEN_DOWNGRADE (bsc#1196247).
• NFSv4: fix open failure with O_ACCMODE flag (git-fixes).
• NFSv4: recover from pre-mature loss of openstateid (bsc#1196247).
• PCI/switchtec: Read all 64 bits of part_event_bitmap (git-fixes).
• PCI: Add device even if driver attach failed (git-fixes).
• PCI: Do not enable AtomicOps on VFs (bsc#1129770)
• PCI: Fix overflow in command-line resource alignment requests (git-fixes).
• PCI: iproc: Fix out-of-bound array accesses (git-fixes).
• PCI: iproc: Set affinity mask on MSI interrupts (git-fixes).
• PCI: qcom: Change duplicate PCI reset to phy reset (git-fixes).
• PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0 (git-fixes).
• RDMA/rxe: Missing unlock on error in get_srq_wqe() (git-fixes)
• RDMA/rxe: Restore setting tot_len in the IPv4 header (git-fixes)
• RDMA/rxe: Use the correct size of wqe when processing SRQ (git-fixes)
• SUNRPC: Handle low memory situations in call_status() (git-fixes).
• USB: Fix 'slab-out-of-bounds Write' bug in usb_hcd_poll_rh_status (git-fixes).
• USB: core: Fix bug in resuming hub's handling of wakeup requests (git-fixes).
• USB: serial: cp210x: add NCR Retail IO box id (git-fixes).
• USB: serial: pl2303: add IBM device IDs (git-fixes).
• USB: serial: simple: add Nokia phone driver (git-fixes).
• USB: usb-storage: Fix use of bitfields for…

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

The following security bugs were fixed:

• CVE-2022-29156: Fixed a double free related to rtrs_clt_dev_release (bnc#1198515).
• CVE-2022-28893: Ensuring that sockets are in the intended state inside the SUNRPC subsystem (bnc#1198330).
• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).
• CVE-2022-28356: Fixed a refcount leak bug found in net/llc/af_llc.c (bnc#1197391).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1280: Fixed a use-after-free vulnerability in drm_lease_held in drivers/gpu/drm/drm_lease.c (bnc#1197914).
• CVE-2022-1158: Fixed KVM x86/mmu compare-and-exchange of gPTE via the user address (bsc#1197660).
• CVE-2022-0812: Fixed random memory leakage inside NFS/RDMA (bsc#1196639).
• CVE-2021-4154: Fixed a use-after-free flaw inside cgroup1_parse_param in kernel/cgroup/cgroup-v1.c. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system (bnc#1193842).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2021-0707: Fixed possible memory corruption due to a use after free inside dma_buf_releas e of dma-buf.c (bnc#1198437).
• CVE-2020-27835: Fixed use after free in infiniband hfi1 driver in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).

The following non-security bugs were fixed:

• ACPI: processor idle: Check for architectural support for LPI (git-fixes).
• ACPI/APEI: Limit printable size of BERT table data (git-fixes).
• ACPICA: Avoid walking the ACPI Namespace if it is not there (git-fixes).
• adm8211: fix error return code in adm8211_probe() (git-fixes).
• ALSA: cs4236: fix an incorrect NULL check on list iterator (git-fixes).
• ALSA: hda/hdmi: fix warning about PCM count when used with SOF (git-fixes).
• ALSA: hda/realtek: Add alc256-samsung-headphone fixup (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PD50PNT (git-fixes).
• ALSA: hda/realtek: Fix audio regression on Mi Notebook Pro 2020 (git-fixes).
• ALSA: pcm: Test for 'silence' field in struct 'pcm_format_data' (git-fixes).
• ALSA: usb-audio: Cap upper limits of buffer/period bytes for implicit fb (git-fixes).
• ALSA: usb-audio: Increase max buffer size (git-fixes).
• ALSA: usb-audio: Limit max buffer and period sizes per time (git-fixes).
• arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1 (git-fixes)
• arm64: dts: allwinner: h5: NanoPI Neo 2: Fix ethernet node (git-fixes)
• arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode (git-fixes)
• arm64: dts: exynos: correct GIC CPU interfaces address range on (git-fixes)
• arm64: dts: ls1028a: fix memory node (git-fixes)
• arm64: dts: ls1028a: fix node name for the sysclk (git-fixes)
• arm64: dts: lx2160a: fix scl-gpios property name (git-fixes)
• arm64: dts: marvell: armada-37xx: Extend PCIe MEM space (git-fixes)
• arm64: dts: marvell: armada-37xx: Fix reg for standard variant of (git-fixes)
• arm64: dts: marvell: armada-37xx: Remap IO space to bus address 0x0 (git-fixes)
• arm64: dts: rockchip: Fix…

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

The following security bugs were fixed:

• CVE-2020-27835: Fixed a use after free vulnerability in infiniband hfi1 driver in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).
• CVE-2021-0707: Fixed a use after free vulnerability in dma_buf_release of dma-buf.c, which may lead to local escalation of privilege with no additional execution privileges needed (bnc#1198437).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2021-4154: Fixed a use-after-free vulnerability in cgroup1_parse_param in kernel/cgroup/cgroup-v1.c, allowing a local privilege escalation by an attacker with user privileges by exploiting the fsconfig syscall parameter, leading to a container breakout and a denial of service on the system (bnc#1193842).
• CVE-2022-0812: Fixed information leak when a file is read from RDMA (bsc#1196639)
• CVE-2022-1158: Fixed a vulnerability in the kvm module that may lead to a use-after-free write or denial of service (bsc#1197660).
• CVE-2022-1280: Fixed a use-after-free vulnerability in drm_lease_held in drivers/gpu/drm/drm_lease.c (bnc#1197914).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2022-28356: Fixed a refcount leak bug in net/llc/af_llc.c (bnc#1197391).
• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).
• CVE-2022-28893: Fixed a use after free vulnerability in inet_put_port where some sockets are not closed before xs_xprt_free() (bsc#1198330).
• CVE-2022-29156: Fixed a double free vulnerability related to rtrs_clt_dev_release.ate (jsc#SLE-15176 bsc#1198515).

The following non-security bugs were fixed:

• ACPI/APEI: Limit printable size of BERT table data (git-fixes).
• ACPI: processor idle: Check for architectural support for LPI (git-fixes).
• ACPICA: Avoid walking the ACPI Namespace if it is not there (git-fixes).
• ALSA: cs4236: fix an incorrect NULL check on list iterator (git-fixes).
• ALSA: hda/hdmi: fix warning about PCM count when used with SOF (git-fixes).
• ALSA: hda/realtek: Add alc256-samsung-headphone fixup (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PD50PNT (git-fixes).
• ALSA: hda/realtek: Fix audio regression on Mi Notebook Pro 2020 (git-fixes).
• ALSA: pcm: Test for 'silence' field in struct 'pcm_format_data' (git-fixes).
• ALSA: usb-audio: Cap upper limits of buffer/period bytes for implicit fb (git-fixes).
• ALSA: usb-audio: Increase max buffer size (git-fixes).
• ALSA: usb-audio: Limit max buffer and period sizes per time (git-fixes).
• ASoC: atmel: Remove system clock tree configuration for at91sam9g20ek (git-fixes).
• ASoC: codecs: wcd934x: do not switch off SIDO Buck when codec is in use (git-fixes).
• ASoC: mediatek: mt6358: add missing EXPORT_SYMBOLs (git-fixes).
• ASoC: msm8916-wcd-digital: Check failure for devm_snd_soc_register_component (git-fixes).
• ASoC: soc-compress: Change the check for codec_dai (git-fixes).
• ASoC: soc-compress: prevent the potentially use of null pointer (git-fixes).
• ASoC: soc-core: skip zero num_dai component in searching dai name (git-fixes).
• ASoC: soc-dapm: fix two incorrect uses of list iterator…

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

The following security bugs were fixed:

• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).
• CVE-2022-28356: Fixed a refcount leak bug found in net/llc/af_llc.c (bnc#1197391).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1280: Fixed a use-after-free vulnerability in drm_lease_held in drivers/gpu/drm/drm_lease.c (bnc#1197914).
• CVE-2022-1011: Fixed a use-after-free flaw inside the FUSE filesystem in the way a user triggers write(). This flaw allowed a local user to gain unauthorized access to data from the FUSE filesystem, resulting in privilege escalation (bnc#1197343).
• CVE-2021-43389: Fixed an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2019-20811: Fixed issue in rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, where a reference count is mishandled (bnc#1172456).
• CVE-2018-7755: Fixed an issue in the fd_locked_ioctl function in drivers/block/floppy.c. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR (bnc#1084513).

The following non-security bugs were fixed:

• IB/qib: Fix memory leak in qib_user_sdma_queue_pkts() (git-fixes)
• NFSD: prevent underflow in nfssvc_decode_writeargs() (git-fixes).
• NFSv4: recover from pre-mature loss of openstateid (bsc#1196247).
• NFSv4: Do not try to CLOSE if the stateid 'other' field has changed (bsc#1196247).
• NFSv4: Fix a regression in nfs_set_open_stateid_locked() (bsc#1196247).
• NFSv4: Handle NFS4ERR_OLD_STATEID in CLOSE/OPEN_DOWNGRADE (bsc#1196247).
• NFSv4: Wait for stateid updates after CLOSE/OPEN_DOWNGRADE (bsc#1196247).
• NFSv4: fix open failure with O_ACCMODE flag (git-fixes).
• PCI/switchtec: Read all 64 bits of part_event_bitmap (git-fixes).
• PCI: Add device even if driver attach failed (git-fixes).
• PCI: Fix overflow in command-line resource alignment requests (git-fixes).
• PCI: iproc: Fix out-of-bound array accesses (git-fixes).
• PCI: iproc: Set affinity mask on MSI interrupts (git-fixes).
• PCI: qcom: Change duplicate PCI reset to phy reset (git-fixes).
• PCI: qcom: Make sure PCIe is reset before init for rev 2.1.0 (git-fixes).
• RDMA/rxe: Missing unlock on error in get_srq_wqe() (git-fixes)
• RDMA/rxe: Restore setting tot_len in the IPv4 header (git-fixes)
• RDMA/rxe: Use the correct size of wqe when processing SRQ (git-fixes)
• SUNRPC: Handle low memory situations in call_status() (git-fixes).
• USB: Fix 'slab-out-of-bounds Write' bug in usb_hcd_poll_rh_status (git-fixes).
• USB: core: Fix bug in resuming hub's handling of wakeup requests (git-fixes).
• USB: serial: cp210x: add NCR Retail IO box id (git-fixes).
• USB: serial: pl2303: add IBM device IDs (git-fixes).
• USB: serial: simple: add Nokia phone driver (git-fixes).
• USB: usb-storage: Fix use of bitfields for hardware data in ene_ub6250.c (git-fixes).
• arm64:…

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

The following security bugs were fixed:

• CVE-2022-29156: Fixed a double free related to rtrs_clt_dev_release (bnc#1198515).
• CVE-2022-28893: Ensuring that sockets are in the intended state inside the SUNRPC subsystem (bnc#1198330).
• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).
• CVE-2022-28356: Fixed a refcount leak bug found in net/llc/af_llc.c (bnc#1197391).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2022-1280: Fixed a use-after-free vulnerability in drm_lease_held in drivers/gpu/drm/drm_lease.c (bnc#1197914).
• CVE-2022-1158: Fixed KVM x86/mmu compare-and-exchange of gPTE via the user address (bsc#1197660).
• CVE-2022-0812: Fixed random memory leakage inside NFS/RDMA (bsc#1196639).
• CVE-2021-4154: Fixed a use-after-free flaw inside cgroup1_parse_param in kernel/cgroup/cgroup-v1.c. A local attacker with a user privilege could cause a privilege escalation by exploiting the fsconfig syscall parameter leading to a container breakout and a denial of service on the system (bnc#1193842).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2021-0707: Fixed possible memory corruption due to a use after free inside dma_buf_releas e of dma-buf.c (bnc#1198437).
• CVE-2020-27835: Fixed use after free in infiniband hfi1 driver in the way user calls Ioctl after open dev file and fork. A local user could use this flaw to crash the system (bnc#1179878).

The following non-security bugs were fixed:

• ACPI: processor idle: Check for architectural support for LPI (git-fixes).
• ACPI/APEI: Limit printable size of BERT table data (git-fixes).
• ACPICA: Avoid walking the ACPI Namespace if it is not there (git-fixes).
• adm8211: fix error return code in adm8211_probe() (git-fixes).
• ALSA: cs4236: fix an incorrect NULL check on list iterator (git-fixes).
• ALSA: hda/hdmi: fix warning about PCM count when used with SOF (git-fixes).
• ALSA: hda/realtek: Add alc256-samsung-headphone fixup (git-fixes).
• ALSA: hda/realtek: Add quirk for Clevo PD50PNT (git-fixes).
• ALSA: hda/realtek: Fix audio regression on Mi Notebook Pro 2020 (git-fixes).
• ALSA: pcm: Test for 'silence' field in struct 'pcm_format_data' (git-fixes).
• ALSA: usb-audio: Cap upper limits of buffer/period bytes for implicit fb (git-fixes).
• ALSA: usb-audio: Increase max buffer size (git-fixes).
• ALSA: usb-audio: Limit max buffer and period sizes per time (git-fixes).
• arm64: clear_page() shouldn't use DC ZVA when DCZID_EL0.DZP == 1 (git-fixes)
• arm64: dts: allwinner: h5: NanoPI Neo 2: Fix ethernet node (git-fixes)
• arm64: dts: allwinner: orangepi-zero-plus: fix PHY mode (git-fixes)
• arm64: dts: exynos: correct GIC CPU interfaces address range on (git-fixes)
• arm64: dts: ls1028a: fix memory node (git-fixes)
• arm64: dts: ls1028a: fix node name for the sysclk (git-fixes)
• arm64: dts: lx2160a: fix scl-gpios property name (git-fixes)
• arm64: dts: marvell: armada-37xx: Extend PCIe MEM space (git-fixes)
• arm64: dts: marvell: armada-37xx: Fix reg for standard variant of (git-fixes)
• arm64: dts: marvell: armada-37xx: Remap IO space to bus address 0x0 (git-fixes)
• arm64: dts: rockchip: Fix GPU…

The SUSE Linux Enterprise 12 SP2 kernel was updated.

The following security bugs were fixed:

• CVE-2022-28390: Fixed a double free in drivers/net/can/usb/ems_usb.c vulnerability in the Linux kernel (bnc#1198031).
• CVE-2022-28388: Fixed a double free in drivers/net/can/usb/usb_8dev.c vulnerability in the Linux kernel (bnc#1198032).
• CVE-2018-20784: Fixed a denial of service (infinite loop in update_blocked_averages) by mishandled leaf cfs_rq in kernel/sched/fair.c (bnc#1126703).
• CVE-2018-7755: Fixed an issue in the fd_locked_ioctl function in drivers/block/floppy.c. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR (bnc#1084513).
• CVE-2020-10769: Fixed a buffer over-read flaw in the IPsec Cryptographic algorithm's module. This flaw allowed a local attacker with user privileges to cause a denial of service. (bnc#1173265)
• CVE-2021-28688: Fixed XSA-365 that includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains (bnc#1183646).
• CVE-2022-21127: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21123: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21125: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21180: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21166: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-1975: Fixed a bug that allows an attacker to crash the linux kernel by simulating nfc device from user-space. (bsc#1200143)
• CVE-2022-1974: Fixed an use-after-free that could causes kernel crash by simulating an nfc device from user-space. (bsc#1200144)
• CVE-2019-19377: Fixed an user-after-free that could be triggered when an attacker mounts a crafted btrfs filesystem image. (bnc#1158266)
• CVE-2022-1184: Fixed an use-after-free and memory errors in ext4 when mounting and operating on a corrupted image. (bsc#1198577)
• CVE-2017-13695: Fixed a bug that caused a stack dump allowing local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted ACPI table. (bnc#1055710)
• CVE-2022-1729: Fixed a sys_perf_event_open() race condition against self (bsc#1199507).
• CVE-2022-21499: Reinforce the kernel lockdown feature, until now it's been trivial to break out of it with kgdb or kdb. (bsc#1199426)
• CVE-2022-1652: Fixed a statically allocated error counter inside the floppy kernel module (bsc#1199063).
• CVE-2022-1734: Fixed a r/w use-after-free when non synchronized between cleanup routine and firmware download routine. (bnc#1199605)
• CVE-2022-30594: Fixed restriction bypass on setting the PT_SUSPEND_SECCOMP flag (bnc#1199505).
• CVE-2021-33061: Fixed insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters that may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1196426).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2021-20321: Fixed…

The SUSE Linux Enterprise 12 SP3 kernel was updated to 3.12.31 to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2022-21127: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21123: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21125: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21180: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21166: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-1975: Fixed a bug that allows an attacker to crash the linux kernel by simulating nfc device from user-space. (bsc#1200143)
• CVE-2022-1974: Fixed an use-after-free that could causes kernel crash by simulating an nfc device from user-space. (bsc#1200144)
• CVE-2019-19377: Fixed an user-after-free that could be triggered when an attacker mounts a crafted btrfs filesystem image. (bnc#1158266)
• CVE-2022-1729: Fixed a sys_perf_event_open() race condition against self (bsc#1199507).
• CVE-2022-1184: Fixed an use-after-free and memory errors in ext4 when mounting and operating on a corrupted image. (bsc#1198577)
• CVE-2022-21499: Reinforce the kernel lockdown feature, until now it's been trivial to break out of it with kgdb or kdb. (bsc#1199426)
• CVE-2017-13695: Fixed a bug that caused a stack dump allowing local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted ACPI table. (bnc#1055710)
• CVE-2022-1652: Fixed a statically allocated error counter inside the floppy kernel module (bsc#1199063).
• CVE-2022-1734: Fixed a r/w use-after-free when non synchronized between cleanup routine and firmware download routine. (bnc#1199605)
• CVE-2022-30594: Fixed restriction bypass on setting the PT_SUSPEND_SECCOMP flag (bnc#1199505).
• CVE-2021-28688: Fixed XSA-365 that includes initialization of pointers such that subsequent cleanup code wouldn't use uninitialized or stale values. This initialization went too far and may under certain conditions also overwrite pointers which are in need of cleaning up. The lack of cleanup would result in leaking persistent grants. The leak in turn would prevent fully cleaning up after a respective guest has died, leaving around zombie domains (bnc#1183646).
• CVE-2020-10769: Fixed a buffer over-read flaw in the IPsec Cryptographic algorithm's module. This flaw allowed a local attacker with user privileges to cause a denial of service. (bnc#1173265)
• CVE-2021-33061: Fixed insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters that may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1196426).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2018-7755: Fixed an issue in the fd_locked_ioctl function in drivers/block/floppy.c. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR (bnc#1084513).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2021-38208: Fixed a denial of service (NULL…

The SUSE Linux Enterprise 12 SP4 kernel was updated.

The following security bugs were fixed:

• CVE-2022-21127: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21123: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21125: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21180: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21166: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-1652: Fixed a statically allocated error counter inside the floppy kernel module (bsc#1199063).
• CVE-2022-1734: Fixed a r/w use-after-free when non synchronized between cleanup routine and firmware download routine. (bnc#1199605)
• CVE-2021-39711: Fixed a possible out of bounds read due to Incorrect Size Value. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1197219).
• CVE-2022-30594: Fixed restriction bypass on setting the PT_SUSPEND_SECCOMP flag (bnc#1199505).
• CVE-2021-33061: Fixed insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters that may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1196426).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2021-43389: Fixed an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2019-20811: Fixed issue in rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, where a reference count is mishandled (bnc#1172456).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c. (bnc#1198516)
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2022-1011: Fixed an use-after-free vulnerability which could allow a local attacker to retireve (partial) /etc/shadow hashes or any other data from filesystem when he can mount a FUSE filesystems. (bnc#1197343)

The following non-security bugs were fixed:

• btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized (bsc#1199399).
• btrfs: relocation: Only remove reloc rb_trees if reloc control has been initialized (bsc#1199399).
• debug: Lock down kgdb (bsc#1199426).
• dimlib: make DIMLIB a hidden symbol (bsc#1197099 jsc#SLE-24124).
• lib/dim: Fix -Wunused-const-variable warnings (bsc#1197099 jsc#SLE-24124).
• lib/dim: fix help text typos (bsc#1197099 jsc#SLE-24124).
• linux/dim: Add completions count to dim_sample (bsc#1197099 jsc#SLE-24124).
• linux/dim: Fix overflow in dim calculation (bsc#1197099 jsc#SLE-24124).
• linux/dim: Implement RDMA adaptive moderation (DIM) (bsc#1197099 jsc#SLE-24124).
• linux/dim: Move implementation to .c files (bsc#1197099 jsc#SLE-24124).
• linux/dim: Move logic to dim.h (bsc#1197099 jsc#SLE-24124).
• linux/dim: Remove 'net' prefix from internal DIM…

The SUSE Linux Enterprise 15 kernel was updated.

The following security bugs were fixed:

• CVE-2022-21127: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21123: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21125: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21180: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21166: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2019-19377: Fixed an user-after-free that could be triggered when an attacker mounts a crafted btrfs filesystem image. (bnc#1158266)
• CVE-2022-1184: Fixed an use-after-free and memory errors in ext4 when mounting and operating on a corrupted image. (bsc#1198577)
• CVE-2017-13695: Fixed a bug that caused a stack dump allowing local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted ACPI table. (bnc#1055710)
• CVE-2022-1729: Fixed a sys_perf_event_open() race condition against self (bsc#1199507).
• CVE-2022-1652: Fixed a statically allocated error counter inside the floppy kernel module (bsc#1199063).
• CVE-2021-39711: In bpf_prog_test_run_skb of test_run.c, there is a possible out of bounds read due to Incorrect Size Value. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1197219).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2021-43389: Fixed an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c. (bnc#1191958)
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c. (bnc#1198516)
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2022-1011: Fixed an use-after-free vulnerability which could allow a local attacker to retireve (partial) /etc/shadow hashes or any other data from filesystem when he can mount a FUSE filesystems. (bnc#1197343)
• CVE-2022-1974: Fixed an use-after-free that could causes kernel crash by simulating an nfc device from user-space. (bsc#1200144)
• CVE-2022-1975: Fixed a bug that allows an attacker to crash the linux kernel by simulating nfc device from user-space. (bsc#1200143)
• CVE-2022-21499: Reinforce the kernel lockdown feature, until now it's been trivial to break out of it with kgdb or kdb. (bsc#1199426)
• CVE-2022-1734: Fixed a r/w use-after-free when non synchronized between cleanup routine and firmware download routine. (bnc#1199605)
• CVE-2022-30594: Fixed restriction bypass on setting the PT_SUSPEND_SECCOMP flag (bnc#1199505).
• CVE-2021-33061: Fixed insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters that may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1196426).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2019-20811: Fixed issue in rx_queue_add_kobject() and…

The SUSE Linux Enterprise 15 SP2 kernel was updated.

The following security bugs were fixed:

• CVE-2022-0168: Fixed a NULL pointer dereference in smb2_ioctl_query_info. (bsc#1197472)
• CVE-2022-1966: Fixed an use-after-free bug in the netfilter subsystem. This flaw allowed a local attacker with user access to cause a privilege escalation issue. (bnc#1200015)
• CVE-2022-28893: Ensuring that sockets are in the intended state inside the SUNRPC subsystem (bnc#1198330).
• CVE-2022-1158: Fixed KVM x86/mmu compare-and-exchange of gPTE via the user address (bsc#1197660).
• CVE-2022-21127: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21123: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21125: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21180: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21166: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-1975: Fixed a bug that allows an attacker to crash the linux kernel by simulating nfc device from user-space. (bsc#1200143)
• CVE-2022-1974: Fixed an use-after-free that could causes kernel crash by simulating an nfc device from user-space. (bsc#1200144)
• CVE-2020-26541: Enforce the secure boot forbidden signature database (aka dbx) protection mechanism. (bnc#1177282)
• CVE-2019-19377: Fixed an user-after-free that could be triggered when an attacker mounts a crafted btrfs filesystem image. (bnc#1158266)
• CVE-2022-1729: Fixed a sys_perf_event_open() race condition against self (bsc#1199507).
• CVE-2022-1184: Fixed an use-after-free and memory errors in ext4 when mounting and operating on a corrupted image. (bsc#1198577)
• CVE-2022-1652: Fixed a statically allocated error counter inside the floppy kernel module (bsc#1199063).
• CVE-2022-1734: Fixed a r/w use-after-free when non synchronized between cleanup routine and firmware download routine. (bnc#1199605)
• CVE-2022-30594: Fixed restriction bypass on setting the PT_SUSPEND_SECCOMP flag (bnc#1199505).
• CVE-2021-33061: Fixed insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters that may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1196426).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c. (bnc#1198516)
• CVE-2022-1011: Fixed an use-after-free vulnerability which could allow a local attacker to retireve (partial) /etc/shadow hashes or any other data from filesystem when he can mount a FUSE filesystems. (bnc#1197343)

The following non-security bugs were fixed:

• btrfs: tree-checker: fix incorrect printk format (bsc#1200249).
• cifs: fix bad fids sent over wire (bsc#1197157).
• direct-io: clean up error paths of do_blockdev_direct_IO (bsc#1197656).
• direct-io: defer alignment check until after the EOF check (bsc#1197656).
• direct-io: do not force writeback for reads beyond EOF (bsc#1197656).
• net: ena: A typo fix in the file ena_com.h (bsc#1198778).
• net: ena: Add capabilities field with support for ENI stats capability (bsc#1198778).
• net: ena: Add debug prints for invalid req_id resets (bsc#1198778).
• net: ena: add device distinct log prefix…

The SUSE Linux Enterprise 15 SP1 kernel was updated.

The following security bugs were fixed:

• CVE-2022-21127: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21123: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21125: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21180: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2022-21166: Fixed a stale MMIO data transient which can be exploited to speculatively/transiently disclose information via spectre like attacks. (bsc#1199650)
• CVE-2019-19377: Fixed an user-after-free that could be triggered when an attacker mounts a crafted btrfs filesystem image. (bnc#1158266)
• CVE-2022-1184: Fixed an use-after-free and memory errors in ext4 when mounting and operating on a corrupted image. (bsc#1198577)
• CVE-2017-13695: Fixed a bug that caused a stack dump allowing local users to obtain sensitive information from kernel memory and bypass the KASLR protection mechanism via a crafted ACPI table. (bnc#1055710)
• CVE-2022-1729: Fixed a sys_perf_event_open() race condition against self (bsc#1199507).
• CVE-2022-1652: Fixed a statically allocated error counter inside the floppy kernel module (bsc#1199063).
• CVE-2021-39711: In bpf_prog_test_run_skb of test_run.c, there is a possible out of bounds read due to Incorrect Size Value. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation (bnc#1197219).
• CVE-2022-30594: Fixed restriction bypass on setting the PT_SUSPEND_SECCOMP flag (bnc#1199505).
• CVE-2021-33061: Fixed insufficient control flow management for the Intel(R) 82599 Ethernet Controllers and Adapters that may have allowed an authenticated user to potentially enable denial of service via local access (bnc#1196426).
• CVE-2022-1516: Fixed null-ptr-deref caused by x25_disconnect (bsc#1199012).
• CVE-2021-20321: Fixed a race condition accessing file object in the OverlayFS subsystem in the way users do rename in specific way with OverlayFS. A local user could have used this flaw to crash the system (bnc#1191647).
• CVE-2019-20811: Fixed issue in rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, where a reference count is mishandled (bnc#1172456).
• CVE-2022-28748: Fixed memory lead over the network by ax88179_178a devices (bsc#1196018).
• CVE-2018-7755: Fixed an issue in the fd_locked_ioctl function in drivers/block/floppy.c. The floppy driver will copy a kernel pointer to user memory in response to the FDGETPRM ioctl. An attacker can send the FDGETPRM ioctl and use the obtained kernel pointer to discover the location of kernel code and data and bypass kernel security protections such as KASLR (bnc#1084513).
• CVE-2022-22942: Fixed stale file descriptors on failed usercopy (bsc#1195065).
• CVE-2022-1419: Fixed a concurrency use-after-free in vgem_gem_dumb_create (bsc#1198742).
• CVE-2021-43389: Fixed an array-index-out-of-bounds flaw in the detach_capi_ctr function in drivers/isdn/capi/kcapi.c (bnc#1191958).
• CVE-2021-38208: Fixed a denial of service (NULL pointer dereference and BUG) by making a getsockname call after a certain type of failure of a bind call (bnc#1187055).
• CVE-2022-1353: Fixed access controll to kernel memory in the pfkey_register function in net/key/af_key.c (bnc#1198516).
• CVE-2021-20292: Fixed object validation prior to performing operations on the object in nouveau_sgdma_create_ttm in Nouveau DRM subsystem (bnc#1183723).
• CVE-2022-1011: Fixed an use-after-free vulnerability which could allow a local attacker to retireve…

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)

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

It was discovered that the ext4 file system implementation in the Linux kernel contained a use-after-free vulnerability. An attacker could use this to construct a malicious ext4 file system image that, when mounted, could cause a denial of service (system crash). (CVE-2022-1184)

Pawan Kumar Gupta, Alyssa Milburn, Amit Peled, Shani Rehana, Nir Shildan and Ariel Sabba discovered that some Intel processors with Enhanced Indirect Branch Restricted Speculation (eIBRS) did not properly handle RET instructions after a VM exits. A local attacker could potentially use this to expose sensitive information. (CVE-2022-26373)

Johannes Wikner and Kaveh Razavi discovered that for some Intel x86-64 processors, the Linux kernel's protections against speculative branch target injection attacks were insufficient in some circumstances. A local attacker could possibly use this to expose sensitive information. (CVE-2022-29901)

It was discovered that the ST NCI NFC driver did not properly handle device removal events. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2023-1990)

It was discovered that the btrfs file system implementation in the Linux kernel did not properly handle error conditions in some situations, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-3111)