CVE-2023-53019

The Linux Kernel, the operating system core itself.

Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

can: dev: can_get_echo_skb(): prevent call to kfree_skb() in hard IRQ context

If a driver calls can_get_echo_skb() during a hardware IRQ (which is often, but not always, the case), the 'WARN_ON(in_irq)' in net/core/skbuff.c#skb_release_head_state() might be triggered, under network congestion circumstances, together with the potential risk of a NULL pointer dereference.

The root cause of this issue is the call to kfree_skb() instead of dev_kfree_skb_irq() in net/core/dev.c#enqueue_to_backlog().

This patch prevents the skb to be freed within the call to netif_rx() by incrementing its reference count with skb_get(). The skb is finally freed by one of the in-irq-context safe functions: dev_consume_skb_any() or dev_kfree_skb_any(). The "any" version is used because some drivers might call can_get_echo_skb() in a normal context.

The reason for this issue to occur is that initially, in the core network stack, loopback skb were not supposed to be received in hardware IRQ context. The CAN stack is an exeption.

This bug was previously reported back in 2017 in [1] but the proposed patch never got accepted.

While [1] directly modifies net/core/dev.c, we try to propose here a smoother modification local to CAN network stack (the assumption behind is that only CAN devices are affected by this issue).

[1] http://lore.kernel.org/r/[email protected](CVE-2020-36789)

In the Linux kernel, the following vulnerability has been resolved:

video: fbdev: cirrusfb: check pixclock to avoid divide by zero

Do a sanity check on pixclock value to avoid divide by zero.

If the pixclock value is zero, the cirrusfb driver will round up pixclock to get the derived frequency as close to maxclock as possible.

Syzkaller reported a divide error in cirrusfb_check_pixclock.

divide error: 0000 [#1] SMP KASAN PTI CPU: 0 PID: 14938 Comm: cirrusfb_test Not tainted 5.15.0-rc6 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.11.0-2 RIP: 0010:cirrusfb_check_var+0x6f1/0x1260

Call Trace: fb_set_var+0x398/0xf90 do_fb_ioctl+0x4b8/0x6f0 fb_ioctl+0xeb/0x130 __x64_sys_ioctl+0x19d/0x220 do_syscall_64+0x3a/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae(CVE-2021-47641)

In the Linux kernel, the following vulnerability has been resolved:

can: dev: can_restart: fix use after free bug

After calling netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the netif_rx_ni() in: stats->rx_bytes += cf->len;

Reordering the lines solves the issue.(CVE-2021-47668)

In the Linux kernel, the following vulnerability has been resolved:

can: peak_usb: fix use after free bugs

After calling peak_usb_netif_rx_ni(skb), dereferencing skb is unsafe. Especially, the can_frame cf which aliases skb memory is accessed after the peak_usb_netif_rx_ni().

Reordering the lines solves the issue.(CVE-2021-47670)

In the Linux kernel, the following vulnerability has been resolved:

qede: confirm skb is allocated before using

qede_build_skb() assumes build_skb() always works and goes straight to skb_reserve(). However, build_skb() can fail under memory pressure. This results in a kernel panic because the skb to reserve is NULL.

Add a check in case build_skb() failed to allocate and return NULL.

The NULL return is handled correctly in callers to qede_build_skb().(CVE-2022-49084)

In the Linux kernel, the following vulnerability has been resolved:

net: openvswitch: fix leak of nested actions

While parsing user-provided actions, openvswitch module may dynamically allocate memory and store pointers in the internal copy of the actions. So this memory has to be freed while destroying the actions.

Currently there are only two such actions: ct() and set(). However, there are many actions that can hold nested lists…

In the Linux kernel, the following vulnerability has been resolved: net: mdio: validate parameter addr in mdiobus_get_phy() The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

• media: bttv: fix use after free error due to btv->timeout timer {CVE-2023-52847} {CVE-2023-52847}
• firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails {CVE-2022-50087} {CVE-2022-50087}
• wifi: mwifiex: Fix OOB and integer underflow when rx packets {CVE-2023-53226} {CVE-2023-53226}
• vsock: Fix transport_* TOCTOU {CVE-2025-38461} {CVE-2025-38461}
• ALSA: usb-audio: Validate UAC3 cluster segment descriptors {CVE-2025-39757} {CVE-2025-39757}
• locking/ww_mutex/test: Fix potential workqueue corruption {CVE-2023-52836} {CVE-2023-52836}
• media: stk1160: fix bounds checking in stk1160_copy_video() {CVE-2024-38621} {CVE-2024-38621}
• ath10k: skip ath10k_halt during suspend for driver state RESTARTING {CVE-2022-49519} {CVE-2022-49519}
• ASoC: ops: Reject out of bounds values in snd_soc_put_volsw() {CVE-2022-48738} {CVE-2022-48738}
• partitions: mac: fix handling of bogus partition table {CVE-2025-21772} {CVE-2025-21772}
• ALSA: oss: Fix PCM OSS buffer allocation overflow {CVE-2022-49292} {CVE-2022-49292}
• usb: cdc-acm: Check control transfer buffer size before access {CVE-2025-21704} {CVE-2025-21704}
• vfio/pci: Properly hide first-in-list PCIe extended capability {CVE-2024-53214} {CVE-2024-53214}
• ppdev: Add an error check in register_device {CVE-2024-36015} {CVE-2024-36015}
• scsi: ses: Fix possible desc_ptr out-of-bounds accesses {CVE-2023-53675} {CVE-2023-53675}
• enic: Validate length of nl attributes in enic_set_vf_port {CVE-2024-38659} {CVE-2024-38659}
• dm array: fix releasing a faulty array block twice in dm_array_cursor_end {CVE-2024-57929} {CVE-2024-57929}
• dlm: fix plock invalid read {CVE-2022-49407} {CVE-2022-49407}
• rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev {CVE-2022-48759} {CVE-2022-48759}
• bpf: Don't use tnum_range on array range checking for poke descriptors {CVE-2022-49985} {CVE-2022-49985}
• net_sched: hfsc: Address reentrant enqueue adding class to eltree twice {CVE-2025-38001} {CVE-2025-38001}
• wifi: ath9k: don't allow to overwrite ENDPOINT0 attributes {CVE-2023-53185} {CVE-2023-53185}
• dm integrity: fix memory corruption when tag_size is less than digest size {CVE-2022-49044} {CVE-2022-49044}
• drm/radeon: possible buffer overflow {CVE-2023-52867} {CVE-2023-52867}
• ata: sata_dwc_460ex: Fix crash due to OOB write {CVE-2022-49073} {CVE-2022-49073}
• fs/jfs: Add validity check for db_maxag and db_agpref {CVE-2023-52804} {CVE-2023-52804}
• net/mlx5e: Check for NOT_READY flag state after locking {CVE-2023-53581} {CVE-2023-53581}
• thermal: core: prevent potential string overflow {CVE-2023-52868} {CVE-2023-52868}
• ACPI: CPPC: Avoid out of bounds access when parsing _CPC data {CVE-2022-49145} {CVE-2022-49145}
• efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare {CVE-2025-39817} {CVE-2025-39817}
• igb: Fix potential invalid memory access in igb_init_module() {CVE-2024-52332} {CVE-2024-52332}
• do_change_type(): refuse to operate on unmounted/not ours mounts {CVE-2025-38498} {CVE-2025-38498}
• drm/amd/display: Skip finding free audio for unknown engine_id {CVE-2024-42119} {CVE-2024-42119}
• wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() {CVE-2022-50408} {CVE-2022-50408}
• wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() {CVE-2024-58014} {CVE-2024-58014}
• wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded sta {CVE-2023-53229} {CVE-2023-53229}
• ovl: Filter invalid inodes with missing lookup function {CVE-2024-56570} {CVE-2024-56570}
• net: usb: smsc75xx: Limit packet length to skb->len {CVE-2023-53125} {CVE-2023-53125}
• net: stmmac: fix dma queue left shift overflow issue {CVE-2022-49592} {CVE-2022-49592}
• iio: adc: at91: call input_free_device() on allocated iio_dev {CVE-2024-57904} {CVE-2024-57904}
• crypto: seqiv - Handle EBUSY correctly {CVE-2023-53373} {CVE-2023-53373}
• sctp: linearize cloned gso packets in sctp_rcv {CVE-2025-38718} {CVE-2025-38718}
• KVM: SVM: Don't BUG if userspace…

• media: bttv: fix use after free error due to btv->timeout timer {CVE-2023-52847}
• firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails {CVE-2022-50087}
• wifi: mwifiex: Fix OOB and integer underflow when rx packets {CVE-2023-53226}
• vsock: Fix transport_* TOCTOU {CVE-2025-38461}
• ALSA: usb-audio: Validate UAC3 cluster segment descriptors {CVE-2025-39757}
• perf/aux: Fix AUX buffer serialization {CVE-2024-46713}
• locking/ww_mutex/test: Fix potential workqueue corruption {CVE-2023-52836}
• media: stk1160: fix bounds checking in stk1160_copy_video() {CVE-2024-38621}
• ath10k: skip ath10k_halt during suspend for driver state RESTARTING {CVE-2022-49519}
• ASoC: ops: Reject out of bounds values in snd_soc_put_volsw() {CVE-2022-48738}
• partitions: mac: fix handling of bogus partition table {CVE-2025-21772}
• ALSA: oss: Fix PCM OSS buffer allocation overflow {CVE-2022-49292}
• usb: cdc-acm: Check control transfer buffer size before access {CVE-2025-21704}
• vfio/pci: Properly hide first-in-list PCIe extended capability {CVE-2024-53214}
• ppdev: Add an error check in register_device {CVE-2024-36015}
• scsi: ses: Fix possible desc_ptr out-of-bounds accesses {CVE-2023-53675}
• enic: Validate length of nl attributes in enic_set_vf_port {CVE-2024-38659}
• dm array: fix releasing a faulty array block twice in dm_array_cursor_end {CVE-2024-57929}
• dlm: fix plock invalid read {CVE-2022-49407}
• rpmsg: char: Fix race between the release of rpmsg_ctrldev and cdev {CVE-2022-48759}
• bpf: Don't use tnum_range on array range checking for poke descriptors {CVE-2022-49985}
• net_sched: hfsc: Address reentrant enqueue adding class to eltree twice {CVE-2025-38001}
• wifi: ath9k: don't allow to overwrite ENDPOINT0 attributes {CVE-2023-53185}
• dm integrity: fix memory corruption when tag_size is less than digest size {CVE-2022-49044}
• drm/radeon: possible buffer overflow {CVE-2023-52867}
• ata: sata_dwc_460ex: Fix crash due to OOB write {CVE-2022-49073}
• fs/jfs: Add validity check for db_maxag and db_agpref {CVE-2023-52804}
• net/mlx5e: Check for NOT_READY flag state after locking {CVE-2023-53581}
• thermal: core: prevent potential string overflow {CVE-2023-52868}
• ACPI: CPPC: Avoid out of bounds access when parsing _CPC data {CVE-2022-49145}
• efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare {CVE-2025-39817}
• igb: Fix potential invalid memory access in igb_init_module() {CVE-2024-52332}
• do_change_type(): refuse to operate on unmounted/not ours mounts {CVE-2025-38498}
• drm/amd/display: Skip finding free audio for unknown engine_id {CVE-2024-42119}
• wifi: brcmfmac: fix use-after-free bug in brcmf_netdev_start_xmit() {CVE-2022-50408}
• wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() {CVE-2024-58014}
• wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded sta {CVE-2023-53229}
• ovl: Filter invalid inodes with missing lookup function {CVE-2024-56570}
• net: usb: smsc75xx: Limit packet length to skb->len {CVE-2023-53125}
• net: stmmac: fix dma queue left shift overflow issue {CVE-2022-49592}
• iio: adc: at91: call input_free_device() on allocated iio_dev {CVE-2024-57904}
• crypto: seqiv - Handle EBUSY correctly {CVE-2023-53373}
• sctp: linearize cloned gso packets in sctp_rcv {CVE-2025-38718}
• KVM: SVM: Don't BUG if userspace injects an interrupt with GIF=0 {CVE-2022-50228}
• soundwire: cadence: fix invalid PDI offset {CVE-2024-38635}
• wifi: at76c50x: fix use after free access in at76_disconnect {CVE-2025-37796}
• ip6mr: Fix skb_under_panic in ip6mr_cache_report() {CVE-2023-53365}
• ntb_hw_switchtec: Fix shift-out-of-bounds in switchtec_ntb_mw_set_trans {CVE-2023-53034}
• Bluetooth: L2CAP: fix "bad unlock balance" in l2cap_disconnect_rsp {CVE-2023-53297}
• scsi: mpt3sas: Fix use-after-free warning {CVE-2022-48695}
• smb: client: fix use-after-free in cifs_oplock_break {CVE-2025-38527}
• NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() {CVE-2025-39730}
• scsi:…

• perf/aux: Fix AUX buffer serialization {CVE-2024-46713}
• block: fix uaf for flush rq while iterating tags {CVE-2024-53170}
• zram: fix potential UAF of zram table {CVE-2025-21671}
• sched: sch_cake: add bounds checks to host bulk flow fairness counts {CVE-2025-21647}
• bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors {CVE-2024-56675}
• net: openvswitch: fix nested key length validation in the set() action {CVE-2025-37789}
• isofs: Prevent the use of too small fid {CVE-2025-37780}
• net: ppp: Add bound checking for skb data on ppp_sync_txmung {CVE-2025-37749}
• sctp: detect and prevent references to a freed transport in sendmsg {CVE-2025-23142}
• ipv6: sr: Fix MAC comparison to be constant-time {CVE-2025-39702}
• RDMA/rxe: Fix incomplete state save in rxe_requester {CVE-2023-53539}
• crypto: xts - Handle EBUSY correctly {CVE-2023-53494}
• Bluetooth: use RCU for hci_conn_params and iterate safely in hci_sync {CVE-2023-53252}
• af_unix: Fix data-races around user->unix_inflight. {CVE-2023-53204}
• fs: fix UAF/GPF bug in nilfs_mdt_destroy {CVE-2022-50367}
• wifi: rtlwifi: remove unused check_buddy_priv {CVE-2024-58072}
• wifi: rtlwifi: remove unused dualmac control leftovers
• wifi: rtlwifi: remove unused timer and related code
• partitions: mac: fix handling of bogus partition table {CVE-2025-21772}
• ipmr: do not call mr_mfc_uses_dev() for unres entries {CVE-2025-21719}
• wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() {CVE-2024-58014}
• net: mdio: validate parameter addr in mdiobus_get_phy() {CVE-2023-53019}
• ALSA: hda/ca0132: Fix buffer overflow in add_tuning_control {CVE-2025-39751}
• NFS: Fix filehandle bounds checking in nfs_fh_to_dentry() {CVE-2025-39730}
• net/mlx5e: Check for NOT_READY flag state after locking {CVE-2023-53581}
• null_blk: Always check queue mode setting from configfs {CVE-2023-53576}
• ip_vti: fix potential slab-use-after-free in decode_session6 {CVE-2023-53559}
• rcu-tasks: Avoid pr_info() with spin lock in cblist_init_generic() {CVE-2023-53558}
• pstore/ram: Check start of empty przs during init {CVE-2023-53331}
• wifi: ath11k: fix memory leak in WMI firmware stats {CVE-2023-53602}
• wifi: mac80211: fix invalid drv_sta_pre_rcu_remove calls for non-uploaded sta {CVE-2023-53229}
• net: ethernet: ti: Fix return type of netcp_ndo_start_xmit() {CVE-2022-50486}
• RDMA/core: Make sure "ib_port" is valid when access sysfs node {CVE-2022-50475}
• RDMA/rxe: Fix mr->map double free {CVE-2022-50543}
• scsi: qla2xxx: Fix end of loop test
• scsi: qla2xxx: Fix mem access after free
• scsi: qla2xxx: Wait for io return on terminate rport {CVE-2023-53322}
• scsi: target: Fix multiple LUN_RESET handling {CVE-2023-53586}
• scsi: ses: Fix possible desc_ptr out-of-bounds accesses {CVE-2023-53675}
• scsi: ses: Fix possible addl_desc_ptr out-of-bounds accesses {CVE-2023-53675}
• scsi: ses: Fix slab-out-of-bounds in ses_enclosure_data_process() {CVE-2023-53675}
• scsi: lpfc: Fix buffer free/clear order in deferred receive path {CVE-2025-39841}
• nbd: fix incomplete validation of ioctl arg {CVE-2023-53513}
• efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare {CVE-2025-39817}
• bnxt: avoid overflow in bnxt_get_nvram_directory() {CVE-2023-53661}

• tracing: Fix potential double free in create_var_ref() {CVE-2022-49410}
• scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() {CVE-2026-23216}
• e1000: fix OOB in e1000_tbi_should_accept() {CVE-2025-71093}
• module: limit enabling module.sig_enforce {CVE-2021-35039}
• Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm {CVE-2022-42896}
• HID: elan: Fix potential double free in elan_input_configured {CVE-2022-49508}
• libceph: make decode_pool() more resilient against corrupted osdmaps {CVE-2025-71116}
• scsi: qla2xxx: Fix improper freeing of purex item {CVE-2025-68741}
• binfmt_misc: fix shift-out-of-bounds in check_special_flags {CVE-2022-50497}
• ring-buffer: Fix deadloop issue on reading trace_pipe {CVE-2023-53668}
• kernfs: fix use-after-free in __kernfs_remove {CVE-2022-50432}
• rbd: avoid use-after-free in do_rbd_add() when rbd_dev_create() fails {CVE-2023-53307}
• virtio_console: Assure used length from device is limited {CVE-2021-38160}
• Squashfs: check metadata block offset is within range {CVE-2026-23388}
• Input: powermate - fix use-after-free in powermate_config_complete {CVE-2023-52475}
• wifi: iwlwifi: mvm: Fix a memory corruption issue {CVE-2023-52531}
• cifs: Fix use-after-free in rdata->read_into_pages() {CVE-2023-52741}
• ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() {CVE-2023-52988}
• selinux: Add boundary check in put_entry() {CVE-2022-50200}
• nvmet: avoid potential UAF in nvmet_req_complete() {CVE-2023-53116}
• ext4: add bounds checking in get_max_inline_xattr_value_size() {CVE-2023-53285}
• drm/i915/perf: add sentinel to xehp_oa_b_counters {CVE-2023-53646}
• net: mdio: validate parameter addr in mdiobus_get_phy() {CVE-2023-53019}
• wifi: nl80211: fix integer overflow in nl80211_parse_mbssid_elems() {CVE-2023-53570}
• vt: Clear selection before changing the font {CVE-2022-49948}
• ipvs: fix WARNING in ip_vs_app_net_cleanup() {CVE-2022-49917}
• netlink: prevent potential spectre v1 gadgets {CVE-2023-53000}
• net: mdio: fix undefined behavior in bit shift for __mdiobus_register {CVE-2022-49907}
• capabilities: fix undefined behavior in bit shift for CAP_TO_MASK {CVE-2022-49870}
• powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue {CVE-2022-50366}
• lwt: Fix return values of BPF xmit ops {CVE-2023-53338}
• ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS {CVE-2022-50315}
• udf: Do not bother merging very long extents {CVE-2023-53506}
• gfs2: Fix possible data races in gfs2_show_options() {CVE-2023-53622}
• wifi: mac80211_hwsim: drop short frames {CVE-2023-53321}
• thermal: core: prevent potential string overflow {CVE-2023-52868}
• drm/radeon: possible buffer overflow {CVE-2023-52867}
• ftrace: Fix invalid address access in lookup_rec() when index is 0 {CVE-2023-53075}
• net: ipv6: ndisc: fix ndisc_ra_useropt to initialize nduseropt_padX fields to zero to prevent an info-leak {CVE-2026-43040}
• drm/amd/display: Skip inactive planes within ModeSupportAndSystemConfiguration {CVE-2024-46812}
• Bluetooth: MGMT: validate LTK enc_size on load {CVE-2026-43020}
• drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() {CVE-2026-43206}
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}
• smb: client: reject userspace cifs.spnego descriptions
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}

In the Linux kernel, the following vulnerability has been resolved:

net: mdio: validate parameter addr in mdiobus_get_phy()

The caller may pass any value as addr, what may result in an out-of-bounds access to array mdio_map. One existing case is stmmac_init_phy() that may pass -1 as addr. Therefore validate addr before using it.

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
• CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
• CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
• CVE-2024-53124: net: fix data-races around sk->sk_forward_alloc (bsc#1234074).
• CVE-2024-53176: smb: During unmount, ensure all cached dir instances drop their dentry (bsc#1234894).
• CVE-2024-53178: smb: Do not leak cfid when reconnect races with open_cached_dir (bsc#1234895).
• CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
• CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
• CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync (bsc#1239095).
• CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
• CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
• CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
• CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).
• CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).

The following non-security bugs were fixed:

• ACPI: processor: idle: Return an error if both P_LVL{2,3} idle states are invalid (bsc#1237530).
• RDMA/mana_ib: Prefer struct_size over open coded arithmetic (bsc#1239016).
• RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing (bsc#1239016).
• Revert 'gfs2: Fix inode height consistency check (git-fixes).
• btrfs: defrag: do not use merged extent map for their generation check (bsc#1239968).
• btrfs: fix defrag not merging contiguous extents due to merged extent maps (bsc#1239968).
• btrfs: fix extent map merging not happening for adjacent extents (bsc#1239968).
• btrfs: send: allow cloning non-aligned extent if it ends at i_size (bsc#1239969).
• btrfs: send: fix invalid clone operation for file that got its size decreased (bsc#1239969).
• cifs: Add a laundromat thread for cached directories (git-fixes).
• cifs: fix potential null pointer use in destroy_workqueue in init_cifs error path (git-fixes).
• gfs2: Fix inode height consistency check (git-fixes).
• mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() (bsc#1239126).
• mm: zswap: move allocations during CPU init outside the lock (git-fixes).
• net: mana: Add flex array to struct mana_cfg_rx_steer_req_v2 (bsc#1239016).
• net: mana: Allow variable size indirection table (bsc#1239016).
• net: mana: Avoid open coded arithmetic (bsc#1239016).
• net: mana: Support holes in device list reply msg (bsc#1240133).
• sched/membarrier: Fix redundant load of membarrier_state (bsc#1232743).
• smb3: allow controlling length of time directory entries are cached with dir leases (git-fixes).
• smb3: do not start laundromat thread when dir leases disabled (git-fixes).
• smb3: retrying on failed server close (git-fixes).
• smb: client: destroy cfid_put_wq on module exit (git-fixes).
• smb: client: disable directory caching when dir_cache_timeout is zero (git-fixes).
• smb: client: do not start laundromat thread on nohandlecache (git-fixes).
• smb: client: make laundromat a delayed worker (git-fixes).
• smb: client: properly close cfids on umount (bsc#1231432, bsc#1232299, bsc#1235599, bsc#1234896).
• tpm: send_data: Wait longer for the TPM to become ready (bsc#1235870).

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
• CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
• CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
• CVE-2024-2201: Fixed information leak in x86/BHI (bsc#1217339).
• CVE-2024-41092: drm/i915/gt: Fix potential UAF by revoke of fence registers (bsc#1228483).
• CVE-2024-42098: crypto: ecdh - explicitly zeroize private_key (bsc#1228779).
• CVE-2024-42229: crypto: aead,cipher - zeroize key buffer after use (bsc#1228708).
• CVE-2024-53064: idpf: fix idpf_vc_core_init error path (bsc#1233558 bsc#1234464).
• CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
• CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
• CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
• CVE-2024-58083: KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (bsc#1239036).
• CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
• CVE-2025-21714: RDMA/mlx5: Fix implicit ODP use after free (bsc#1237890).
• CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
• CVE-2025-21732: RDMA/mlx5: Fix a race for an ODP MR which leads to CQE with error (bsc#1237877).
• CVE-2025-21753: btrfs: fix use-after-free when attempting to join an aborted transaction (bsc#1237875).
• CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).
• CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).
• CVE-2025-21839: kABI: Fix kABI after backport od CVE-2025-21839 (bsc#1239061).

The following non-security bugs were fixed:

• ACPI: processor: idle: Return an error if both P_LVL{2,3} idle states are invalid (bsc#1237530).
• RDMA/mana_ib: Prefer struct_size over open coded arithmetic (bsc#1239016).
• RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing (bsc#1239016).
• RDMA/mlx5: Fix implicit ODP hang on parent deregistration (git-fixes)
• btrfs: defrag: do not use merged extent map for their generation check (bsc#1239968).
• btrfs: fix defrag not merging contiguous extents due to merged extent maps (bsc#1239968).
• btrfs: fix extent map merging not happening for adjacent extents (bsc#1239968).
• btrfs: send: allow cloning non-aligned extent if it ends at i_size (bsc#1239969).
• btrfs: send: fix invalid clone operation for file that got its size decreased (bsc#1239969).
• gfs2: Fix inode height consistency check (git-fixes).
• mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() (bsc#1239126).
• mm: zswap: move allocations during CPU init outside the lock (git-fixes).
• net: mana: Add flex array to struct mana_cfg_rx_steer_req_v2 (bsc#1239016).
• net: mana: Allow variable size indirection table (bsc#1239016).
• net: mana: Avoid open coded arithmetic (bsc#1239016).
• net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup (bsc#1240195).
• net: mana: Support holes in device list reply msg (bsc#1240133).
• x86/bhi: Avoid warning in #DB handler due to BHI mitigation (git-fixes).
• x86/bugs: Cache the value of MSR_IA32_ARCH_CAPABILITIES (git-fixes).
• x86/bugs: Fix BHI documentation (git-fixes).
• x86/bugs: Fix BHI handling of RRSBA (git-fixes).
• x86/bugs: Fix BHI retpoline check (git-fixes).
• x86/bugs: Fix return type of spectre_bhi_state() (git-fixes).
• x86/bugs: Remove CONFIG_BHI_MITIGATION_AUTO and spectre_bhi=auto (git-fixes).

The SUSE Linux Enterprise 15 SP4 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
• CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
• CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
• CVE-2024-53064: idpf: fix idpf_vc_core_init error path (bsc#1233558 bsc#1234464).
• CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
• CVE-2024-58083: KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() (bsc#1239036).
• CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
• CVE-2025-21714: RDMA/mlx5: Fix implicit ODP use after free (bsc#1237890).
• CVE-2025-21732: RDMA/mlx5: Fix a race for an ODP MR which leads to CQE with error (bsc#1237877).
• CVE-2025-21753: btrfs: fix use-after-free when attempting to join an aborted transaction (bsc#1237875).
• CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).

The following non-security bugs were fixed:

• ACPI: processor: idle: Return an error if both P_LVL{2,3} idle states are invalid (bsc#1237530).
• RDMA/mana_ib: Prefer struct_size over open coded arithmetic (bsc#1239016).
• RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing (bsc#1239016).
• RDMA/mlx5: Fix implicit ODP hang on parent deregistration (git-fixes)
• btrfs: defrag: do not use merged extent map for their generation check (bsc#1239968).
• btrfs: fix defrag not merging contiguous extents due to merged extent maps (bsc#1239968).
• btrfs: fix extent map merging not happening for adjacent extents (bsc#1239968).
• btrfs: send: allow cloning non-aligned extent if it ends at i_size (bsc#1239969).
• btrfs: send: fix invalid clone operation for file that got its size decreased (bsc#1239969).
• gfs2: Fix inode height consistency check (git-fixes).
• mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() (bsc#1239126).
• mm: zswap: move allocations during CPU init outside the lock (git-fixes).
• net: mana: Add flex array to struct mana_cfg_rx_steer_req_v2 (bsc#1239016).
• net: mana: Allow variable size indirection table (bsc#1239016).
• net: mana: Avoid open coded arithmetic (bsc#1239016).
• net: mana: Fix error handling in mana_create_txq/rxq's NAPI cleanup (bsc#1240195).
• net: mana: Support holes in device list reply msg (bsc#1240133).

The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.

The following security bugs were fixed:

• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49465: blk-throttle: Set BIO_THROTTLED when bio has been throttled (bsc#1238919).
• CVE-2022-49739: gfs2: Always check inode size of inline inodes (bsc#1240207).
• CVE-2023-52935: mm/khugepaged: fix ->anon_vma race (bsc#1240276).
• CVE-2024-53124: net: fix data-races around sk->sk_forward_alloc (bsc#1234074).
• CVE-2024-53176: smb: During unmount, ensure all cached dir instances drop their dentry (bsc#1234894).
• CVE-2024-53178: smb: Do not leak cfid when reconnect races with open_cached_dir (bsc#1234895).
• CVE-2024-56651: can: hi311x: hi3110_can_ist(): fix potential use-after-free (bsc#1235528).
• CVE-2024-57996: net_sched: sch_sfq: do not allow 1 packet limit (bsc#1239076).
• CVE-2024-58013: Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync (bsc#1239095).
• CVE-2024-58014: wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() (bsc#1239109).
• CVE-2025-21693: mm: zswap: properly synchronize freeing resources during CPU hotunplug (bsc#1237029).
• CVE-2025-21718: net: rose: fix timer races against user threads (bsc#1239073).
• CVE-2025-21772: partitions: mac: fix handling of bogus partition table (bsc#1238911).
• CVE-2025-21780: drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() (bsc#1239115).

The following non-security bugs were fixed:

• ACPI: processor: idle: Return an error if both P_LVL{2,3} idle states are invalid (bsc#1237530).
• btrfs: defrag: do not use merged extent map for their generation check (bsc#1239968).
• btrfs: fix defrag not merging contiguous extents due to merged extent maps (bsc#1239968).
• btrfs: fix extent map merging not happening for adjacent extents (bsc#1239968).
• btrfs: send: allow cloning non-aligned extent if it ends at i_size (bsc#1239969).
• btrfs: send: fix invalid clone operation for file that got its size decreased (bsc#1239969).
• cifs: Add a laundromat thread for cached directories (git-fixes).
• cifs: fix potential null pointer use in destroy_workqueue in init_cifs error path (git-fixes).
• gfs2: Fix inode height consistency check (git-fixes).
• mm: zswap: move allocations during CPU init outside the lock (git-fixes).
• mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove() (bsc#1239126).
• net: mana: Add flex array to struct mana_cfg_rx_steer_req_v2 (bsc#1239016).
• net: mana: Allow variable size indirection table (bsc#1239016).
• net: mana: Avoid open coded arithmetic (bsc#1239016).
• net: mana: Support holes in device list reply msg (bsc#1240133).
• RDMA/mana_ib: Prefer struct_size over open coded arithmetic (bsc#1239016).
• RDMA/mana_ib: Use v2 version of cfg_rx_steer_req to enable RX coalescing (bsc#1239016).
• sched/membarrier: Fix redundant load of membarrier_state (bsc#1232743).
• smb: client: destroy cfid_put_wq on module exit (git-fixes).
• smb: client: disable directory caching when dir_cache_timeout is zero (git-fixes).
• smb: client: do not start laundromat thread on nohandlecache (git-fixes).
• smb: client: make laundromat a delayed worker (git-fixes).
• smb: client: properly close cfids on umount (bsc#1231432, bsc#1232299, bsc#1235599, bsc#1234896).
• smb3: allow controlling length of time directory entries are cached with dir leases (git-fixes).
• smb3: do not start laundromat thread when dir leases disabled (git-fixes).
• smb3: retrying on failed server close (git-fixes).
• tpm: send_data: Wait longer for the TPM to become ready (bsc#1235870).

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

The following security bugs were fixed:

• CVE-2021-46925: Fixed kernel panic caused by race of smc_sock (bsc#1220466).
• CVE-2021-47645: media: staging: media: zoran: calculate the right buffer number for zoran_reap_stat_com (bsc#1237767).
• CVE-2021-47648: gpu: host1x: Fix a memory leak in 'host1x_remove()' (bsc#1237725).
• CVE-2022-49046: i2c: dev: check return value when calling dev_set_name() (bsc#1237842).
• CVE-2022-49051: net: usb: aqc111: Fix out-of-bounds accesses in RX fixup (bsc#1237903).
• CVE-2022-49053: scsi: target: tcmu: Fix possible page UAF (bsc#1237918).
• CVE-2022-49059: nfc: nci: add flush_workqueue to prevent uaf (bsc#1238007).
• CVE-2022-49074: irqchip/gic-v3: Fix GICR_CTLR.RWP polling (bsc#1237728).
• CVE-2022-49075: btrfs: fix qgroup reserve overflow the qgroup limit (bsc#1237733).
• CVE-2022-49084: qede: confirm skb is allocated before using (bsc#1237751).
• CVE-2022-49107: ceph: fix memory leak in ceph_readdir when note_last_dentry returns error (bsc#1237973).
• CVE-2022-49109: ceph: fix inode reference leakage in ceph_get_snapdir() (bsc#1237836).
• CVE-2022-49119: scsi: pm8001: Fix memory leak in pm8001_chip_fw_flash_update_req() (bsc#1237925).
• CVE-2022-49120: scsi: pm8001: Fix task leak in pm8001_send_abort_all() (bsc#1237969).
• CVE-2022-49209: bpf, sockmap: Fix memleak in tcp_bpf_sendmsg while sk msg is full (bsc#1238252).
• CVE-2022-49220: dax: make sure inodes are flushed before destroy cache (bsc#1237936).
• CVE-2022-49275: can: m_can: m_can_tx_handler(): fix use after free of skb (bsc#1238719).
• CVE-2022-49286: tpm: use try_get_ops() in tpm-space.c (bsc#1238647).
• CVE-2022-49292: ALSA: oss: Fix PCM OSS buffer allocation overflow (bsc#1238625).
• CVE-2022-49308: extcon: Modify extcon device to be created after driver data is set (bsc#1238654).
• CVE-2022-49331: nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling (bsc#1237813).
• CVE-2022-49344: af_unix: Fix a data-race in unix_dgram_peer_wake_me() (bsc#1237988).
• CVE-2022-49367: net: dsa: mv88e6xxx: Fix refcount leak in mv88e6xxx_mdios_register (bsc#1238447).
• CVE-2022-49370: firmware: dmi-sysfs: Fix memory leak in dmi_sysfs_register_handle (bsc#1238467).
• CVE-2022-49372: tcp: tcp_rtx_synack() can be called from process context (bsc#1238251).
• CVE-2022-49388: ubi: ubi_create_volume: Fix use-after-free when volume creation failed (bsc#1237934).
• CVE-2022-49395: um: Fix out-of-bounds read in LDT setup (bsc#1237953).
• CVE-2022-49397: phy: qcom-qmp: fix struct clk leak on probe errors (bsc#1237823).
• CVE-2022-49404: RDMA/hfi1: Fix potential integer multiplication overflow errors (bsc#1238430).
• CVE-2022-49416: wifi: mac80211: fix use-after-free in chanctx code (bsc#1238293).
• CVE-2022-49433: RDMA/hfi1: Prevent use of lock before it is initialized (bsc#1238268).
• CVE-2022-49472: net: phy: micrel: Allow probing without .driver_data (bsc#1238951).
• CVE-2022-49488: drm/msm/mdp5: Return error code in mdp5_mixer_release when deadlock (bsc#1238600).
• CVE-2022-49495: drm/msm/hdmi: check return value after calling platform_get_resource_byname() (bsc#1237932).
• CVE-2022-49497: net: remove two BUG() from skb_checksum_help() (bsc#1238946).
• CVE-2022-49505: NFC: NULL out the dev->rfkill to prevent UAF (bsc#1238615).
• CVE-2022-49516: ice: always check VF VSI pointer values (bsc#1238953).
• CVE-2022-49519: ath10k: skip ath10k_halt during suspend for driver state RESTARTING (bsc#1238943).
• CVE-2022-49524: media: pci: cx23885: Fix the error handling in cx23885_initdev() (bsc#1238949).
• CVE-2022-49530: drm/amd/pm: fix double free in si_parse_power_table() (bsc#1238944).
• CVE-2022-49538: ALSA: jack: Fix mutex call in snd_jack_report() (bsc#1238843).
• CVE-2022-49544: ipw2x00: Fix potential NULL dereference in libipw_xmit() (bsc#1238721).
• CVE-2022-49545: ALSA: usb-audio: Cancel pending work at closing a MIDI substream (bsc#1238729). -…