CVE-2019-20811

An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.

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 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 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 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…

It was discovered that the Conexant 23885 TV card device driver for 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-2019-19054)

It was discovered that the Atheros HTC based wireless driver in the Linux kernel did not properly deallocate in certain error conditions. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2019-19073, CVE-2019-19074)

Yue Haibing discovered that the Linux kernel did not properly handle reference counting in sysfs for network devices in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2019-20811)

It was discovered that the F2FS file system in the Linux kernel did not properly perform bounds checking in some situations, leading to an out-of- bounds read. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-9445)

It was discovered that the F2FS file system in the Linux kernel did not properly validate xattr meta data in some situations, leading to an out-of- bounds read. An attacker could use this to construct a malicious F2FS image that, when mounted, could expose sensitive information (kernel memory). (CVE-2019-9453)

It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2020-0067)

It was discovered that the NFS client implementation in the Linux kernel did not properly perform bounds checking before copying security labels in some situations. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2020-25212)