CVE-2023-53608

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() The finalization of nilfs_segctor_thread() can race with nilfs_segctor_kill_thread() which terminates that thread, potentially causing a use-after-free BUG as KASAN detected. At the end of nilfs_segctor_thread(), it assigns NULL to "sc_task" member of "struct nilfs_sc_info" to indicate the thread has finished, and then notifies nilfs_segctor_kill_thread() of this using waitqueue "sc_wait_task" on the struct nilfs_sc_info. However, here, immediately after the NULL assignment to "sc_task", it is possible that nilfs_segctor_kill_thread() will detect it and return to continue the deallocation, freeing the nilfs_sc_info structure before the thread does the notification. This fixes the issue by protecting the NULL assignment to "sc_task" and its notification, with spinlock "sc_state_lock" of the struct nilfs_sc_info. Since nilfs_segctor_kill_thread() does a final check to see if "sc_task" is NULL with "sc_state_lock" locked, this can eliminate the race.

In the Linux kernel, the following vulnerability has been resolved: nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() The finalization of nilfs_segctor_thread() can race with nilfs_segctor_kill_thread() which terminates that thread, potentially causing a use-after-free BUG as KASAN detected. At the end of nilfs_segctor_thread(), it assigns NULL to "sc_task" member of "struct nilfs_sc_info" to indicate the thread has finished, and then notifies nilfs_segctor_kill_thread() of this using waitqueue "sc_wait_task" on the struct nilfs_sc_info. However, here, immediately after the NULL assignment to "sc_task", it is possible that nilfs_segctor_kill_thread() will detect it and return to continue the deallocation, freeing the nilfs_sc_info structure before the thread does the notification. This fixes the issue by protecting the NULL assignment to "sc_task" and its notification, with spinlock "sc_state_lock" of the struct nilfs_sc_info. Since nilfs_segctor_kill_thread() does a final check to see if "sc_task" is NULL with "sc_state_lock" locked, this can eliminate the race.

• CVE-2023-53515
  • virtio-mmio: don't break lifecycle of vm_dev {CVE-2023-53515}
• CVE-2025-39967
  • fbcon: fix integer overflow in fbcon_do_set_font {CVE-2025-39967}
  • fbcon: Fix OOB access in font allocation {CVE-2025-39967}
• CVE-2025-38702
  • fbdev: fix potential buffer overflow in do_register_framebuffer() {CVE-2025-38702}
• CVE-2025-38563
  • perf/core: Prevent VMA split of buffer mappings {CVE-2025-38563}
• CVE-2025-39869
  • dmaengine: ti: edma: Fix memory allocation size for queue_priority_map {CVE-2025-39869}
• CVE-2023-53577
  • bpf, cpumap: Make sure kthread is running before map update returns {CVE-2023-53577}
• CVE-2023-53608
  • nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() {CVE-2023-53608}
• CVE-2023-53604
  • dm integrity: call kmem_cache_destroy() in dm_integrity_init() error path {CVE-2023-53604}
• CVE-2023-53619
  • netfilter: Replace printk() with pr_*() and define pr_fmt() {CVE-2023-53619}
  • netfilter: use kvmalloc_array to allocate memory for hashtable {CVE-2023-53619}
  • netfilter: conntrack: Avoid nf_ct_helper_hash uses after free {CVE-2023-53619}
• CVE-2025-38680
  • media: uvcvideo: Fix 1-byte out-of-bounds read in {CVE-2025-38680}
• CVE-2023-53454
  • HID: multitouch: Correct devm device reference for hidinput {CVE-2023-53454}
• CVE-2025-38699
  • scsi: bfa: Double-free fix {CVE-2025-38699}
  • ubi: ensure that VID header offset + VID header size <= alloc, size {CVE-2023-53265}
  • scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() {CVE-2023-53676}
  • fs: jfs: Fix UBSAN: array-index-out-of-bounds in {CVE-2025-38699}
• CVE-2023-53596
  • drivers: base: Free devm resources when unregistering a {CVE-2023-53596}
• CVE-2023-53622
  • gfs2: Fix possible data races in gfs2_show_options() {CVE-2023-53622}
  • HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition {CVE-2023-53622}
• CVE-2023-53090
  • drm/amdkfd: Fix an illegal memory access {CVE-2023-53090}
• CVE-2023-53116
  • nvmet: avoid potential UAF in nvmet_req_complete() {CVE-2023-53116}
• CVE-2023-53138
  • net: caif: Fix use-after-free in cfusbl_device_notify() {CVE-2023-53138}
• CVE-2023-53035
  • nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy() {CVE-2023-53035}
• CVE-2023-53668
  • ring-buffer: Fix deadloop issue on reading trace_pipe {CVE-2023-53668}
• CVE-2023-53616
  • jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount {CVE-2023-53616}
• CVE-2023-53554
  • staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext() {CVE-2023-53554}
• CVE-2023-53587
  • ring-buffer: Sync IRQ works before buffer destruction {CVE-2023-53587}
• CVE-2023-53541
  • mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write {CVE-2023-53541}
• CVE-2023-53559
  • ip_vti: fix potential slab-use-after-free in decode_session6 {CVE-2023-53559}
• CVE-2023-53484
  • lib: cpu_rmap: Avoid use after free on rmap->obj array entries {CVE-2023-53484}
  • lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release() {CVE-2023-53484}
• CVE-2025-39824
  • HID: asus: fix UAF via HID_CLAIMED_INPUT validation {CVE-2025-39824}
• CVE-2025-38715
  • hfs: fix slab-out-of-bounds in hfs_bnode_read() {CVE-2025-38715}
• CVE-2023-53153
  • wifi: cfg80211: Fix use after free for wext {CVE-2023-53153}
• CVE-2025-38555
  • usb: gadget : fix use-after-free in composite_dev_cleanup() {CVE-2025-38555}
• CVE-2025-39743
  • jfs: truncate good inode pages when hard link is 0 {CVE-2025-39743}
• CVE-2025-39945
  • cnic: Fix use-after-free bugs in cnic_delete_task {CVE-2025-39945}
• CVE-2023-53506
  • udf: Do not bother merging very…

• Miscellaneous Ubuntu changes
  • update-from-bionic-master repo has been updated
• Miscellaneous upstream changes
  • debian: add control and changeg files [ Ubuntu: 4.15.0-254.265 ]
• CVE-2023-53515
  • virtio-mmio: don't break lifecycle of vm_dev {CVE-2023-53515}
• CVE-2025-39967
  • fbcon: fix integer overflow in fbcon_do_set_font {CVE-2025-39967}
  • fbcon: Fix OOB access in font allocation {CVE-2025-39967}
• CVE-2025-38702
  • fbdev: fix potential buffer overflow in do_register_framebuffer() {CVE-2025-38702}
• CVE-2025-38563
  • perf/core: Prevent VMA split of buffer mappings {CVE-2025-38563}
• CVE-2025-39869
  • dmaengine: ti: edma: Fix memory allocation size for queue_priority_map {CVE-2025-39869}
• CVE-2023-53577
  • bpf, cpumap: Make sure kthread is running before map update returns {CVE-2023-53577}
• CVE-2023-53608
  • nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() {CVE-2023-53608}
• CVE-2023-53604
  • dm integrity: call kmem_cache_destroy() in dm_integrity_init() error path {CVE-2023-53604}
• CVE-2023-53619
  • netfilter: Replace printk() with pr_*() and define pr_fmt() {CVE-2023-53619}
  • netfilter: use kvmalloc_array to allocate memory for hashtable {CVE-2023-53619}
  • netfilter: conntrack: Avoid nf_ct_helper_hash uses after free {CVE-2023-53619}
• CVE-2025-38680
  • media: uvcvideo: Fix 1-byte out-of-bounds read in {CVE-2025-38680}
• CVE-2023-53454
  • HID: multitouch: Correct devm device reference for hidinput {CVE-2023-53454}
• CVE-2025-38699
  • scsi: bfa: Double-free fix {CVE-2025-38699}
  • ubi: ensure that VID header offset + VID header size <= alloc, size {CVE-2023-53265}
  • scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() {CVE-2023-53676}
  • fs: jfs: Fix UBSAN: array-index-out-of-bounds in {CVE-2025-38699}
• CVE-2023-53596
  • drivers: base: Free devm resources when unregistering a {CVE-2023-53596}
• CVE-2023-53622
  • gfs2: Fix possible data races in gfs2_show_options() {CVE-2023-53622}
  • HSI: ssi_protocol: Fix use after free vulnerability in ssi_protocol Driver Due to Race Condition {CVE-2023-53622}
• CVE-2023-53090
  • drm/amdkfd: Fix an illegal memory access {CVE-2023-53090}
• CVE-2023-53116
  • nvmet: avoid potential UAF in nvmet_req_complete() {CVE-2023-53116}
• CVE-2023-53138
  • net: caif: Fix use-after-free in cfusbl_device_notify() {CVE-2023-53138}
• CVE-2023-53035
  • nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy() {CVE-2023-53035}
• CVE-2023-53668
  • ring-buffer: Fix deadloop issue on reading trace_pipe {CVE-2023-53668}
• CVE-2023-53616
  • jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount {CVE-2023-53616}
• CVE-2023-53554
  • staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext() {CVE-2023-53554}
• CVE-2023-53587
  • ring-buffer: Sync IRQ works before buffer destruction {CVE-2023-53587}
• CVE-2023-53541
  • mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write {CVE-2023-53541}
• CVE-2023-53559
  • ip_vti: fix potential slab-use-after-free in decode_session6 {CVE-2023-53559}
• CVE-2023-53484
  • lib: cpu_rmap: Avoid use after free on rmap->obj array entries {CVE-2023-53484}
  • lib: cpu_rmap: Fix potential use-after-free in irq_cpu_rmap_release() {CVE-2023-53484}
• CVE-2025-39824
  • HID: asus: fix UAF via HID_CLAIMED_INPUT validation {CVE-2025-39824}
• CVE-2025-38715
  • hfs: fix slab-out-of-bounds in hfs_bnode_read() {CVE-2025-38715}
• CVE-2023-53153
  • wifi: cfg80211: Fix use after free for wext {CVE-2023-53153}
• CVE-2025-38555
  • usb: gadget : fix use-after-free in composite_dev_cleanup() {CVE-2025-38555}
• CVE-2025-39743
  • jfs: truncate good inode…

• CVE-2025-39743
  • jfs: truncate good inode pages when hard link is 0 {CVE-2025-39743}
• CVE-2025-39685
  • comedi: pcl726: Prevent invalid irq number {CVE-2025-39685}
• CVE-2025-38713
  • hfsplus: fix slab-out-of-bounds read in hfsplus_uni2asc() {CVE-2025-38713}
• CVE-2025-38699
  • scsi: bfa: Double-free fix {CVE-2025-38699}
• CVE-2025-38697
  • jfs: upper bound check of tree index in dbAllocAG {CVE-2025-38697}
• CVE-2025-38680
  • media: uvcvideo: Fix 1-byte out-of-bounds read in uvc_parse_format() {CVE-2025-38680}
• CVE-2025-38677
  • f2fs: fix to avoid out-of-boundary access in dnode page {CVE-2025-38677}
• CVE-2025-38572
  • ipv6: reject malicious packets in ipv6_gso_segment() {CVE-2025-38572}
• CVE-2025-38538
  • dmaengine: nbpfaxi: Fix memory corruption in probe() {CVE-2025-38538}
• CVE-2025-38530
  • comedi: pcl812: Fix bit shift out of bounds {CVE-2025-38530}
• CVE-2025-38529
  • comedi: aio_iiro_16: Fix bit shift out of bounds {CVE-2025-38529}
• CVE-2025-38494
  • HID: core: do not bypass hid_hw_raw_request {CVE-2025-38494}
• CVE-2025-38482
  • comedi: das6402: Fix bit shift out of bounds {CVE-2025-38482}
• CVE-2025-38428
  • Input: ims-pcu - check record size in ims_pcu_flash_firmware() {CVE-2025-38428}
• CVE-2025-38416
  • NFC: nci: uart: Set tty->disc_data only in success path {CVE-2025-38416}
• CVE-2025-38415
  • Squashfs: check return result of sb_min_blocksize {CVE-2025-38415}
• CVE-2025-38403
  • vsock/vmci: Clear the vmci transport packet properly when initializing it {CVE-2025-38403}
• CVE-2025-38286
  • pinctrl: at91: Fix possible out-of-boundary access {CVE-2025-38286}
• CVE-2025-38245
  • atm: Release atm_dev_mutex after removing procfs in atm_dev_deregister(). {CVE-2025-38245}
• CVE-2025-38212
  • ipc: fix to protect IPCS lookups using RCU {CVE-2025-38212}
• CVE-2025-38204
  • jfs: fix array-index-out-of-bounds read in add_missing_indices {CVE-2025-38204}
• CVE-2025-38157
  • wifi: ath9k_htc: Abort software beacon handling if disabled {CVE-2025-38157}
• CVE-2025-38079
  • crypto: algif_hash - fix double free in hash_accept {CVE-2025-38079}
• CVE-2025-38051
  • smb: client: Fix use-after-free in cifs_fill_dirent {CVE-2025-38051}
• CVE-2023-53676
  • scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() {CVE-2023-53676}
• CVE-2023-53675
  • scsi: ses: Fix possible desc_ptr out-of-bounds accesses {CVE-2023-53675}
• CVE-2023-53668
  • ring-buffer: Fix deadloop issue on reading trace_pipe {CVE-2023-53668}
• CVE-2023-53622
  • gfs2: Fix possible data races in gfs2_show_options() {CVE-2023-53622}
• CVE-2023-53616
  • jfs: fix invalid free of JFS_IP(ipimap)->i_imap in diUnmount {CVE-2023-53616}
• CVE-2023-53608
  • nilfs2: fix potential UAF of struct nilfs_sc_info in nilfs_segctor_thread() {CVE-2023-53608}
• CVE-2023-53587
  • ring-buffer: Sync IRQ works before buffer destruction {CVE-2023-53587}
• CVE-2023-53569
  • ext2: Check block size validity during mount {CVE-2023-53569}
• CVE-2023-53559
  • ip_vti: fix potential slab-use-after-free in decode_session6 {CVE-2023-53559}
• CVE-2023-53541
  • mtd: rawnand: brcmnand: Fix potential out-of-bounds access in oob write {CVE-2023-53541}
• CVE-2023-53521
  • scsi: ses: Fix slab-out-of-bounds in ses_intf_remove() {CVE-2023-53521}
• CVE-2023-53506
  • udf: Do not bother merging very long extents {CVE-2023-53506}
• CVE-2023-53485
  • fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev {CVE-2023-53485}
• CVE-2023-53484
  • lib: cpu_rmap: Avoid use after free on rmap->obj array entries {CVE-2023-53484}
• CVE-2023-53454
  • HID: multitouch: Correct devm device reference for hidinput input_dev name…

The SUSE Linux Enterprise 15 SP4 kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (bsc#1249859).
• CVE-2022-50334: hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (bsc#1249857).
• CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace (bsc#1251164).
• CVE-2022-50516: fs: dlm: fix invalid derefence of sb_lvbptr (bsc#1251741).
• CVE-2023-53365: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (bsc#1249988).
• CVE-2023-53500: xfrm: fix slab-use-after-free in decode_session6 (bsc#1250816).
• CVE-2023-53559: ip_vti: fix potential slab-use-after-free in decode_session6 (bsc#1251052).
• CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading (bsc#1251222).
• CVE-2023-53619: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free (bsc#1251743).
• CVE-2023-53673: Bluetooth: hci_event: call disconnect callback before deleting conn (bsc#1251763).
• CVE-2023-53705: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (bsc#1252554).
• CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249479).
• CVE-2025-39945: cnic: Fix use-after-free bugs in cnic_delete_task (bsc#1251230).
• CVE-2025-39967: fbcon: fix integer overflow in fbcon_do_set_font (bsc#1252033).
• CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047).
• CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252035).
• CVE-2025-39978: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() (bsc#1252069).
• CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688).
• CVE-2025-40044: fs: udf: fix OOB read in lengthAllocDescs handling (bsc#1252785).
• CVE-2025-40088: hfsplus: fix slab-out-of-bounds read in hfsplus_strcasecmp() (bsc#1252904).
• CVE-2025-40102: KVM: arm64: Prevent access to vCPU events before init (bsc#1252919).

The following non security issues were fixed:

• fbcon: Fix OOB access in font allocation (bsc#1252033)
• mm: avoid unnecessary page fault retires on shared memory types (bsc#1251823).
• net: hv_netvsc: fix loss of early receive events from host during channel open (bsc#1252265).

The SUSE Linux Enterprise 15 SP4 RT kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (bsc#1249859).
• CVE-2022-50334: hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (bsc#1249857).
• CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace (bsc#1251164).
• CVE-2022-50516: fs: dlm: fix invalid derefence of sb_lvbptr (bsc#1251741).
• CVE-2023-53365: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (bsc#1249988).
• CVE-2023-53500: xfrm: fix slab-use-after-free in decode_session6 (bsc#1250816).
• CVE-2023-53559: ip_vti: fix potential slab-use-after-free in decode_session6 (bsc#1251052).
• CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading (bsc#1251222).
• CVE-2023-53619: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free (bsc#1251743).
• CVE-2023-53673: Bluetooth: hci_event: call disconnect callback before deleting conn (bsc#1251763).
• CVE-2023-53705: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (bsc#1252554).
• CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249479).
• CVE-2025-39945: cnic: Fix use-after-free bugs in cnic_delete_task (bsc#1251230).
• CVE-2025-39967: fbcon: fix integer overflow in fbcon_do_set_font (bsc#1252033).
• CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047).
• CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252035).
• CVE-2025-39978: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() (bsc#1252069).
• CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688).
• CVE-2025-40044: fs: udf: fix OOB read in lengthAllocDescs handling (bsc#1252785).
• CVE-2025-40088: hfsplus: fix slab-out-of-bounds read in hfsplus_strcasecmp() (bsc#1252904).
• CVE-2025-40102: KVM: arm64: Prevent access to vCPU events before init (bsc#1252919).

The following non security issues were fixed:

• fbcon: Fix OOB access in font allocation (bsc#1252033)
• mm: avoid unnecessary page fault retires on shared memory types (bsc#1251823).
• net: hv_netvsc: fix loss of early receive events from host during channel open (bsc#1252265).

The SUSE Linux Enterprise 15 SP5 RT kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (bsc#1249859).
• CVE-2022-50334: hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (bsc#1249857).
• CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace (bsc#1251164).
• CVE-2022-50516: fs: dlm: fix invalid derefence of sb_lvbptr (bsc#1251741).
• CVE-2023-53365: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (bsc#1249988).
• CVE-2023-53500: xfrm: fix slab-use-after-free in decode_session6 (bsc#1250816).
• CVE-2023-53559: ip_vti: fix potential slab-use-after-free in decode_session6 (bsc#1251052).
• CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading (bsc#1251222).
• CVE-2023-53619: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free (bsc#1251743).
• CVE-2023-53673: Bluetooth: hci_event: call disconnect callback before deleting conn (bsc#1251763).
• CVE-2023-53705: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (bsc#1252554).
• CVE-2025-37885: KVM: x86: Reset IRTE to host control if new route isn't postable (bsc#1242960).
• CVE-2025-38084: hugetlb: unshare some PMDs when splitting VMAs (bsc#1245498).
• CVE-2025-38085: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race (bsc#1245499).
• CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline() (bsc#1247317).
• CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249479).
• CVE-2025-39797: xfrm: Duplicate SPI Handling (bsc#1249608).
• CVE-2025-39945: cnic: Fix use-after-free bugs in cnic_delete_task (bsc#1251230).
• CVE-2025-39967: fbcon: fix integer overflow in fbcon_do_set_font (bsc#1252033).
• CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047).
• CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252035).
• CVE-2025-39978: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() (bsc#1252069).
• CVE-2025-39981: Bluetooth: MGMT: Fix possible UAFs (bsc#1252060).
• CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688).
• CVE-2025-40044: fs: udf: fix OOB read in lengthAllocDescs handling (bsc#1252785).

The following non security issues were fixed:

• NFS: remove revoked delegation from server's delegation list (bsc#1246211).
• NFSv4: Allow FREE_STATEID to clean up delegations (bsc#1246211).
• fbcon: Fix OOB access in font allocation (bsc#1252033)
• kabi fix for NFSv4: Allow FREE_STATEID to clean up delegations (bsc#1246211).
• mm: avoid unnecessary page fault retires on shared memory types (bsc#1251823).
• net: hv_netvsc: fix loss of early receive events from host during channel open (bsc#1252265).
• net: mana: Switch to page pool for jumbo frames (bsc#1248754).
• net: mana: Use page pool fragments for RX buffers instead of full pages to improve memory efficiency (bsc#1248754).
• netfilter: nft_objref: validate objref and objrefmap expressions (bsc#1250237). No CVE available yet, please see the bugzilla ticket referenced.

The SUSE Linux Enterprise 15 SP5 kernel was updated to fix various security issues

The following security issues were fixed:

• CVE-2022-50327: ACPI: processor: idle: Check acpi_fetch_acpi_dev() return value (bsc#1249859).
• CVE-2022-50334: hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() (bsc#1249857).
• CVE-2022-50490: bpf: Propagate error from htab_lock_bucket() to userspace (bsc#1251164).
• CVE-2022-50516: fs: dlm: fix invalid derefence of sb_lvbptr (bsc#1251741).
• CVE-2023-53365: ip6mr: Fix skb_under_panic in ip6mr_cache_report() (bsc#1249988).
• CVE-2023-53500: xfrm: fix slab-use-after-free in decode_session6 (bsc#1250816).
• CVE-2023-53559: ip_vti: fix potential slab-use-after-free in decode_session6 (bsc#1251052).
• CVE-2023-53574: wifi: rtw88: delete timer and free skb queue when unloading (bsc#1251222).
• CVE-2023-53619: netfilter: conntrack: Avoid nf_ct_helper_hash uses after free (bsc#1251743).
• CVE-2023-53673: Bluetooth: hci_event: call disconnect callback before deleting conn (bsc#1251763).
• CVE-2023-53705: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (bsc#1252554).
• CVE-2025-37885: KVM: x86: Reset IRTE to host control if new route isn't postable (bsc#1242960).
• CVE-2025-38084: hugetlb: unshare some PMDs when splitting VMAs (bsc#1245498).
• CVE-2025-38085: mm/hugetlb: fix huge_pmd_unshare() vs GUP-fast race (bsc#1245499).
• CVE-2025-38476: rpl: Fix use-after-free in rpl_do_srh_inline() (bsc#1247317).
• CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249479).
• CVE-2025-39797: xfrm: Duplicate SPI Handling (bsc#1249608).
• CVE-2025-39945: cnic: Fix use-after-free bugs in cnic_delete_task (bsc#1251230).
• CVE-2025-39967: fbcon: fix integer overflow in fbcon_do_set_font (bsc#1252033).
• CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047).
• CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252035).
• CVE-2025-39978: octeontx2-pf: Fix potential use after free in otx2_tc_add_flow() (bsc#1252069).
• CVE-2025-39981: Bluetooth: MGMT: Fix possible UAFs (bsc#1252060).
• CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688).
• CVE-2025-40044: fs: udf: fix OOB read in lengthAllocDescs handling (bsc#1252785).

The following non security issues were fixed:

• NFS: remove revoked delegation from server's delegation list (bsc#1246211).
• NFSv4: Allow FREE_STATEID to clean up delegations (bsc#1246211).
• fbcon: Fix OOB access in font allocation (bsc#1252033)
• kabi fix for NFSv4: Allow FREE_STATEID to clean up delegations (bsc#1246211).
• kernel-subpackage-spec: Do not doubly-sign modules (bsc#1251930).
• mm: avoid unnecessary page fault retires on shared memory types (bsc#1251823).
• net: hv_netvsc: fix loss of early receive events from host during channel open (bsc#1252265).
• net: mana: Switch to page pool for jumbo frames (bsc#1248754).
• net: mana: Use page pool fragments for RX buffers instead of full pages to improve memory efficiency (bsc#1248754).
• netfilter: nft_objref: validate objref and objrefmap expressions (bsc#1250237).
• rpm/check-for-config-changes: ignore CONFIG_SCHED_PROXY_EXEC, too (bsc#1250946)