CVE-2023-52988

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() snd_hda_get_connections() can return a negative error code. It may lead to accessing 'conn' array at a negative index. Found by Linux Verification Center (linuxtesting.org) with SVACE.

The Linux Kernel, the operating system core itself.

Security Fix(es):

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

nfc: nci: add flush_workqueue to prevent uaf

Our detector found a concurrent use-after-free bug when detaching an NCI device. The main reason for this bug is the unexpected scheduling between the used delayed mechanism (timer and workqueue).

The race can be demonstrated below:

Thread-1 Thread-2 | nci_dev_up() | nci_open_device() | __nci_request(nci_reset_req) | nci_send_cmd | queue_work(cmd_work) nci_unregister_device() | nci_close_device() | ... del_timer_sync(cmd_timer)[1] | ... | Worker nci_free_device() | nci_cmd_work() kfree(ndev)[3] | mod_timer(cmd_timer)[2]

In short, the cleanup routine thought that the cmd_timer has already been detached by [1] but the mod_timer can re-attach the timer [2], even it is already released [3], resulting in UAF.

This UAF is easy to trigger, crash trace by POC is like below

[ 66.703713] ================================================================== [ 66.703974] BUG: KASAN: use-after-free in enqueue_timer+0x448/0x490 [ 66.703974] Write of size 8 at addr ffff888009fb7058 by task kworker/u4:1/33 [ 66.703974] [ 66.703974] CPU: 1 PID: 33 Comm: kworker/u4:1 Not tainted 5.18.0-rc2 #5 [ 66.703974] Workqueue: nfc2_nci_cmd_wq nci_cmd_work [ 66.703974] Call Trace: [ 66.703974] <TASK> [ 66.703974] dump_stack_lvl+0x57/0x7d [ 66.703974] print_report.cold+0x5e/0x5db [ 66.703974] ? enqueue_timer+0x448/0x490 [ 66.703974] kasan_report+0xbe/0x1c0 [ 66.703974] ? enqueue_timer+0x448/0x490 [ 66.703974] enqueue_timer+0x448/0x490 [ 66.703974] __mod_timer+0x5e6/0xb80 [ 66.703974] ? mark_held_locks+0x9e/0xe0 [ 66.703974] ? try_to_del_timer_sync+0xf0/0xf0 [ 66.703974] ? lockdep_hardirqs_on_prepare+0x17b/0x410 [ 66.703974] ? queue_work_on+0x61/0x80 [ 66.703974] ? lockdep_hardirqs_on+0xbf/0x130 [ 66.703974] process_one_work+0x8bb/0x1510 [ 66.703974] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 66.703974] ? pwq_dec_nr_in_flight+0x230/0x230 [ 66.703974] ? rwlock_bug.part.0+0x90/0x90 [ 66.703974] ? _raw_spin_lock_irq+0x41/0x50 [ 66.703974] worker_thread+0x575/0x1190 [ 66.703974] ? process_one_work+0x1510/0x1510 [ 66.703974] kthread+0x2a0/0x340 [ 66.703974] ? kthread_complete_and_exit+0x20/0x20 [ 66.703974] ret_from_fork+0x22/0x30 [ 66.703974] </TASK> [ 66.703974] [ 66.703974] Allocated by task 267: [ 66.703974] kasan_save_stack+0x1e/0x40 [ 66.703974] __kasan_kmalloc+0x81/0xa0 [ 66.703974] nci_allocate_device+0xd3/0x390 [ 66.703974] nfcmrvl_nci_register_dev+0x183/0x2c0 [ 66.703974] nfcmrvl_nci_uart_open+0xf2/0x1dd [ 66.703974] nci_uart_tty_ioctl+0x2c3/0x4a0 [ 66.703974] tty_ioctl+0x764/0x1310 [ 66.703974] __x64_sys_ioctl+0x122/0x190 [ 66.703974] do_syscall_64+0x3b/0x90 [ 66.703974] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 66.703974] [ 66.703974] Freed by task 406: [ 66.703974] kasan_save_stack+0x1e/0x40 [ 66.703974] kasan_set_track+0x21/0x30 [ 66.703974] kasan_set_free_info+0x20/0x30 [ 66.703974] __kasan_slab_free+0x108/0x170 [ 66.703974] kfree+0xb0/0x330 [ 66.703974] nfcmrvl_nci_unregister_dev+0x90/0xd0 [ 66.703974] nci_uart_tty_close+0xdf/0x180 [ 66.703974] tty_ldisc_kill+0x73/0x110 [ 66.703974] tty_ldisc_hangup+0x281/0x5b0 [ 66.703974] __tty_hangup.part.0+0x431/0x890 [ 66.703974] tty_release+0x3a8/0xc80 [ 66.703974] __fput+0x1f0/0x8c0 [ 66.703974] task_work_run+0xc9/0x170 [ 66.703974] exit_to_user_mode_prepare+0x194/0x1a0 [ 66.703974] syscall_exit_to_user_mode+0x19/0x50 [ 66.703974] …

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() snd_hda_get_connections() can return a negative error code. It may lead to accessing 'conn' array at a negative index. Found by Linux Verification Center (linuxtesting.org) with SVACE.

• Bionic update: upstream stable patchset 2022-04-13 (LP: #1968932) // CVE- url: https://ubuntu.com/security/CVE-2022-23041
  • xen/gnttab: fix gnttab_end_foreign_access() without page specified
• Bionic update: upstream stable patchset 2023-01-20 (LP: #2003596) // CVE- url: https://ubuntu.com/security/CVE-2022-49850
  • nilfs2: fix deadlock in nilfs_count_free_blocks()
• CVE-url: https://ubuntu.com/security/CVE-2024-42305
  • ext4: check dot and dotdot of dx_root before making dir indexed
• CVE-url: https://ubuntu.com/security/CVE-2024-53168
  • sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket
• CVE-url: https://ubuntu.com/security/CVE-2024-26915
  • drm/amdgpu: Add check to prevent IH overflow
  • drm/amdgpu: Reset IH OVERFLOW_CLEAR bit
• CVE-url: https://ubuntu.com/security/CVE-2024-56770
  • net/sched: netem: account for backlog updates from child qdisc
  • netem: Update sch->q.qlen before qdisc_tree_reduce_backlog()
• Bionic update: upstream stable patchset 2022-01-14 (LP: #1957957) // CVE- url: https://ubuntu.com/security/CVE-2021-47587
  • net: systemport: Add global locking for descriptor lifecycle
• Bionic update: upstream stable patchset 2021-06-01 (LP: #1930472) // CVE- url: https://ubuntu.com/security/CVE-2021-46959
  • spi: Fix use-after-free with devm_spi_alloc_*
• CVE-url: https://ubuntu.com/security/CVE-2024-26689
  • ceph: prevent use-after-free in encode_cap_msg()
• CVE-url: https://ubuntu.com/security/CVE-2024-53066
  • nfs: Fix KMSAN warning in decode_getfattr_attrs()
• CVE-url: https://ubuntu.com/security/CVE-2024-49944
  • sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start
• CVE-url: https://ubuntu.com/security/CVE-2024-50237
  • wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
• CVE-url: https://ubuntu.com/security/CVE-2024-46780
  • nilfs2: protect references to superblock parameters exposed in sysfs
• CVE-url: https://ubuntu.com/security/CVE-2024-53063
  • media: dvbdev: prevent the risk of out of memory access
  • media: dvbdev: fix the logic when DVB_DYNAMIC_MINORS is not set
• CVE-url: https://ubuntu.com/security/CVE-2021-47150
  • net: fec: fix the potential memory leak in fec_enet_init()
• CVE-url: https://ubuntu.com/security/CVE-2024-53140
  • netlink: terminate outstanding dump on socket close
• CVE-url: https://ubuntu.com/security/CVE-2025-21971
  • net_sched: Prevent creation of classes with TC_H_ROOT
• CVE-url: https://ubuntu.com/security/CVE-2023-52572
  • cifs: Fix UAF in cifs_demultiplex_thread()
• CVE-url: https://ubuntu.com/security/CVE-2025-37785
  • ext4: fix OOB read when checking dotdot dir
• Bionic update: upstream stable patchset 2021-07-14 (LP: #1936231) // CVE- url: https://ubuntu.com/security/CVE-2021-47277
  • kvm: avoid speculation-based attacks from out-of-range memslot accesses
• CVE-url: https://ubuntu.com/security/CVE-2022-49740
  • wifi: brcmfmac: Check the count value of channel spec to prevent out-of- bounds reads
• Bionic update: upstream stable patchset 2022-07-25 (LP: #1982782) // CVE- url: https://ubuntu.com/security/CVE-2022-49404
  • RDMA/hfi1: Fix potential integer multiplication overflow errors
• Bionic update: upstream stable patchset 2023-03-03 (LP: #2009237) // CVE- url: https://ubuntu.com/security/CVE-2022-49757
  • EDAC/highbank: Fix memory leak in highbank_mc_probe()
• Bionic update: upstream stable patchset 2022-07-25 (LP: #1982782) // CVE- url: https://ubuntu.com/security/CVE-2022-49395
  • um: Fix out-of-bounds read in LDT setup
• CVE-url: https://ubuntu.com/security/CVE-2022-49738
  • f2fs: fix to do sanity check on summary info
  • f2fs: should put a page when checking the summary info
  • f2fs: fix to do sanity check on i_extra_isize in is_alive()
• CVE-url:…

• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• wifi: iwlwifi: limit printed string from FW file {CVE-2025-21905}
• drm/amdgpu: Fix potential out-of-bounds access in 'amdgpu_discovery_reg_base_init()' {CVE-2024-27042}
• dm-crypt: don't modify the data when using authenticated encryption {CVE-2024-26763}
• sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket {CVE-2024-53168}
• cifs: Fix UAF in cifs_demultiplex_thread() {CVE-2023-52572}
• veth: Fix use after free in XDP_REDIRECT {CVE-2023-53107}
• firmware: arm_scmi: Fix slab-use-after-free in scmi_bus_notifier() {CVE-2024-53068}
• arm64/sve: Discard stale CPU state when handling SVE traps {CVE-2024-50275}
• Bluetooth: L2CAP: Fix slab-use-after-free Read in l2cap_send_cmd {CVE-2025-21969}
• wifi: mt76: mt7921e: fix use-after-free in free_irq() {CVE-2024-26892}
• rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read {CVE-2024-58069}
• nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu() {CVE-2025-21927}
• pfifo_tail_enqueue: Drop new packet when sch->limit == 0 {CVE-2025-21702}
• net_sched: sch_fifo: implement lockless __fifo_dump() {CVE-2025-21702}
• iscsi_ibft: Fix UBSAN shift-out-of-bounds warning in ibft_attr_show_nic() {CVE-2025-21993}
• vlan: enforce underlying device type {CVE-2025-21920}
• HID: intel-ish-hid: Fix use-after-free issue in ishtp_hid_remove() {CVE-2025-21928}
• watch_queue: Actually free the watch {CVE-2022-49256}
• can: bcm: Fix UAF in bcm_proc_show() {CVE-2023-52922}
• ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() {CVE-2023-52988}
• netfilter: nf_set_pipapo: fix initial map fill {CVE-2024-57947}
• hwmon: (lm90) Prevent integer overflow/underflow in hysteresis calculations {CVE-2021-47098}
• aio: fix use-after-free due to missing POLLFREE handling {CVE-2021-47505}
• aio: keep poll requests on waitqueue until completed {CVE-2021-47505}
• smb: client: fix potential deadlock when releasing mids {CVE-2023-52757}
• cifs: remove useless DeleteMidQEntry() {CVE-2023-52757}
• media: uvcvideo: Remove dangling pointers {CVE-2024-58002}
• media: uvcvideo: Only save async fh if success {CVE-2024-58002}
• media: uvcvideo: Refactor iterators {CVE-2024-58002}
• drm: nv04: Fix out of bounds access {CVE-2024-27008}
• drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() {CVE-2025-21780}
• arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array {CVE-2025-21785}
• net: rose: fix timer races against user threads {CVE-2025-21718}
• media: uvcvideo: Fix double free in error path {CVE-2024-57980}
• vrf: use RCU protection in l3mdev_l3_out() {CVE-2025-21791}
• geneve: Fix use-after-free in geneve_find_dev(). {CVE-2025-21858}
• afs: Increase buffer size in afs_update_volume_status() {CVE-2024-26736}
• net: atlantic: eliminate double free in error handling logic {CVE-2023-52664}
• bpf: Check validity of link->type in bpf_link_show_fdinfo() {CVE-2024-53099}

• vsock: Keep the binding until socket destruction {CVE-2025-21756}
• mt76: fix use-after-free by removing a non-RCU wcid pointer {CVE-2022-49328}
• bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb() {CVE-2022-49840}
• ASoC: core: Fix use-after-free in snd_soc_exit() {CVE-2022-49842}
• net: sched: Fix use after free in red_enqueue() {CVE-2022-49921}
• udf: Fix a slab-out-of-bounds write bug in udf_find_entry() {CVE-2022-49846}
• ftrace: Fix use-after-free for dynamic ftrace_ops {CVE-2022-49892}
• dm ioctl: prevent potential spectre v1 gadget {CVE-2022-49122}
• scsi: libfc: Fix use after free in fc_exch_abts_resp() {CVE-2022-49114}
• mac80211: fix potential double free on mesh join {CVE-2022-49290}
• wifi: mac80211: fix use-after-free in chanctx code {CVE-2022-49416}
• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() {CVE-2023-52988}
• tracing: Fix potential double free in create_var_ref() {CVE-2022-49410}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths {CVE-2022-48991}
• cifs: potential buffer overflow in handling symlinks {CVE-2022-49058}
• media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init {CVE-2022-49478}
• HID: elan: Fix potential double free in elan_input_configured {CVE-2022-49508}
• bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers {CVE-2023-52621}
• drm/amd/pm: fix double free in si_parse_power_table() {CVE-2022-49530}
• drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() {CVE-2025-21780}
• crypto: scomp - fix req->dst buffer overflow {CVE-2023-52612}
• sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket {CVE-2024-53168}
• net: make sock_inuse_add() available {CVE-2024-53168}

• vsock: Keep the binding until socket destruction {CVE-2025-21756}
• mt76: fix use-after-free by removing a non-RCU wcid pointer {CVE-2022-49328}
• bpf, test_run: Fix alignment problem in bpf_prog_test_run_skb() {CVE-2022-49840}
• ASoC: core: Fix use-after-free in snd_soc_exit() {CVE-2022-49842}
• net: sched: Fix use after free in red_enqueue() {CVE-2022-49921}
• udf: Fix a slab-out-of-bounds write bug in udf_find_entry() {CVE-2022-49846}
• ftrace: Fix use-after-free for dynamic ftrace_ops {CVE-2022-49892}
• dm ioctl: prevent potential spectre v1 gadget {CVE-2022-49122}
• scsi: libfc: Fix use after free in fc_exch_abts_resp() {CVE-2022-49114}
• mac80211: fix potential double free on mesh join {CVE-2022-49290}
• wifi: mac80211: fix use-after-free in chanctx code {CVE-2022-49416}
• ext4: fix OOB read when checking dotdot dir {CVE-2025-37785}
• ALSA: hda/via: Avoid potential array out-of-bound in add_secret_dac_path() {CVE-2023-52988}
• tracing: Fix potential double free in create_var_ref() {CVE-2022-49410}
• wifi: brcmfmac: Check the count value of channel spec to prevent out-of-bounds reads {CVE-2022-49740}
• mm/khugepaged: invoke MMU notifiers in shmem/file collapse paths {CVE-2022-48991}
• cifs: potential buffer overflow in handling symlinks {CVE-2022-49058}
• media: pvrusb2: fix array-index-out-of-bounds in pvr2_i2c_core_init {CVE-2022-49478}
• HID: elan: Fix potential double free in elan_input_configured {CVE-2022-49508}
• bpf: Check rcu_read_lock_trace_held() before calling bpf map helpers {CVE-2023-52621}
• drm/amd/pm: fix double free in si_parse_power_table() {CVE-2022-49530}
• drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() {CVE-2025-21780}
• crypto: scomp - fix req->dst buffer overflow {CVE-2023-52612}
• sunrpc: fix one UAF issue caused by sunrpc kernel tcp socket {CVE-2024-53168}
• net: make sock_inuse_add() available {CVE-2024-53168}

• smb: client: reject userspace cifs.spnego descriptions
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• nvme-rdma: fix possible use-after-free in transport error_recovery work {CVE-2022-48788}
• hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails {CVE-2022-49029}
• Input: powermate - fix use-after-free in powermate_config_complete {CVE-2023-52475}
• 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}
• 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}
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• usb: cdc-wdm: avoid setting WDM_READ for ZLP-s {CVE-2026-43427}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}

• 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}

• smb: client: reject userspace cifs.spnego descriptions
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• nvme-rdma: fix possible use-after-free in transport error_recovery work {CVE-2022-48788}
• hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails {CVE-2022-49029}
• Input: powermate - fix use-after-free in powermate_config_complete {CVE-2023-52475}
• 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}
• 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}
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• usb: cdc-wdm: avoid setting WDM_READ for ZLP-s {CVE-2026-43427}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}

• smb: client: reject userspace cifs.spnego descriptions
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• nvme-rdma: fix possible use-after-free in transport error_recovery work {CVE-2022-48788}
• hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails {CVE-2022-49029}
• Input: powermate - fix use-after-free in powermate_config_complete {CVE-2023-52475}
• 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}
• 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}
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• usb: cdc-wdm: avoid setting WDM_READ for ZLP-s {CVE-2026-43427}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}

• smb: client: reject userspace cifs.spnego descriptions
• ALSA: ctxfi: Limit PTP to a single page {CVE-2026-31602}
• nvme-rdma: fix possible use-after-free in transport error_recovery work {CVE-2022-48788}
• hwmon: (ibmpex) Fix possible UAF when ibmpex_register_bmc() fails {CVE-2022-49029}
• Input: powermate - fix use-after-free in powermate_config_complete {CVE-2023-52475}
• 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}
• 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}
• ALSA: caiaq: fix stack out-of-bounds read in init_card {CVE-2026-31778}
• usb: cdc-wdm: avoid setting WDM_READ for ZLP-s {CVE-2026-43427}
• netfilter: nfnetlink_cthelper: fix OOB read in nfnl_cthelper_dump_table() {CVE-2026-43450}

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

The following security bugs were fixed:

• CVE-2021-47670: can: peak_usb: fix use after free bugs (bsc#1241407).
• CVE-2022-49139: Bluetooth: fix null ptr deref on hci_sync_conn_complete_evt (bsc#1238032).
• CVE-2022-49145: ACPI: CPPC: Avoid out of bounds access when parsing _CPC data (bsc#1238162).
• CVE-2022-49168: btrfs: do not clean up repair bio if submit fails (bsc#1238109).
• CVE-2022-49190: kernel/resource: fix kfree() of bootmem memory again (bsc#1238130).
• CVE-2022-49212: mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init (bsc#1238331).
• CVE-2022-49216: drm/tegra: Fix reference leak in tegra_dsi_ganged_probe (bsc#1238338).
• CVE-2022-49235: ath9k_htc: fix uninit value bugs (bsc#1238333).
• CVE-2022-49248: ALSA: firewire-lib: fix uninitialized flag for AV/C deferred transaction (bsc#1238284).
• CVE-2022-49253: media: usb: go7007: s2250-board: fix leak in probe() (bsc#1238420).
• CVE-2022-49320: dmaengine: zynqmp_dma: In struct zynqmp_dma_chan fix desc_size data type (bsc#1238394).
• CVE-2022-49326: rtl818x: Prevent using not initialized queues (bsc#1238646).
• CVE-2022-49371: driver core: fix deadlock in __device_attach (bsc#1238546).
• CVE-2022-49382: soc: rockchip: Fix refcount leak in rockchip_grf_init (bsc#1238306).
• CVE-2022-49396: phy: qcom-qmp: fix reset-controller leak on probe errors (bsc#1238289).
• CVE-2022-49420: net: annotate races around sk->sk_bound_dev_if (bsc#1238887).
• CVE-2022-49441: tty: fix deadlock caused by calling printk() under tty_port->lock (bsc#1238263).
• CVE-2022-49445: pinctrl: renesas: core: Fix possible null-ptr-deref in sh_pfc_map_resources() (bsc#1238019).
• CVE-2022-49460: PM / devfreq: rk3399_dmc: Disable edev on remove() (bsc#1238892).
• CVE-2022-49467: drm: msm: fix possible memory leak in mdp5_crtc_cursor_set() (bsc#1238815).
• CVE-2022-49474: Bluetooth: fix dangling sco_conn and use-after-free in sco_sock_timeout (bsc#1238071).
• CVE-2022-49491: drm/rockchip: vop: fix possible null-ptr-deref in vop_bind() (bsc#1238539).
• CVE-2022-49503: ath9k_htc: fix potential out of bounds access with invalid rxstatus->rs_keyix (bsc#1238868).
• CVE-2022-49592: net: stmmac: fix dma queue left shift overflow issue (bsc#1238311).
• CVE-2022-49625: sfc: fix kernel panic when creating VF (bsc#1238411).
• CVE-2022-49635: drm/i915/selftests: fix subtraction overflow bug (bsc#1238806).
• CVE-2022-49652: dmaengine: ti: Fix refcount leak in ti_dra7_xbar_route_allocate (bsc#1238871).
• CVE-2022-49715: irqchip/gic-v3: Fix refcount leak in gic_populate_ppi_partitions (bsc#1238818).
• CVE-2022-49728: kABI workaround for changeing the variable length type to size_t (bsc#1239111).
• CVE-2022-49729: nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred (bsc#1239060).
• CVE-2022-49751: w1: fix WARNING after calling w1_process() (bsc#1240254).
• CVE-2022-49761: btrfs: always report error in run_one_delayed_ref() (bsc#1240261).
• CVE-2022-49772: ALSA: usb-audio: Drop snd_BUG_ON() from snd_usbmidi_output_open() (bsc#1242147).
• CVE-2022-49775: tcp: cdg: allow tcp_cdg_release() to be called multiple times (bsc#1242245).
• CVE-2022-49776: macvlan: enforce a consistent minimal mtu (bsc#1242248).
• CVE-2022-49787: mmc: sdhci-pci: Fix possible memory leak caused by missing pci_dev_put() (bsc#1242352).
• CVE-2022-49788: misc/vmw_vmci: fix an infoleak in vmci_host_do_receive_datagram() (bsc#1242353).
• CVE-2022-49813: net: ena: Fix error handling in ena_init() (bsc#1242497).
• CVE-2022-49821: mISDN: fix possible memory leak in mISDN_dsp_element_register() (bsc#1242542).
• CVE-2022-49826: ata: libata-transport: fix double ata_host_put() in ata_tport_add() (bsc#1242549).
• CVE-2022-49829: drm/scheduler: fix fence ref counting (bsc#1242691).
• CVE-2022-49832: pinctrl: devicetree: fix null pointer dereferencing in pinctrl_dt_to_map (bsc#1242154).
• CVE-2022-49835: ALSA: hda: fix potential memleak in…

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).