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SUSE-SU-2026:20561-1 Not scored

Security update for the Linux Kernel

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-21816: hrtimers: Force migrate away hrtimers queued after (bsc#1238472). - CVE-2025-38653: proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al (bsc#1248630). - CVE-2025-38718: sctp: linearize cloned gso packets in sctp_rcv (bsc#1249161). - CVE-2025-39676: scsi: qla4xxx: Prevent a potential error pointer dereference (bsc#1249302). - CVE-2025-39702: ipv6: sr: Fix MAC comparison to be constant-time (bsc#1249317). - CVE-2025-39756: fs: Prevent file descriptor table allocations exceeding INT_MAX (bsc#1249512). - CVE-2025-39779: btrfs: subpage: keep TOWRITE tag until folio is cleaned (bsc#1249495). - CVE-2025-39812: sctp: initialize more fields in sctp_v6_from_sk() (bsc#1250202). - CVE-2025-39866: fs: writeback: fix use-after-free in __mark_inode_dirty() (bsc#1250455). - CVE-2025-39876: net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() (bsc#1250400). - CVE-2025-39881: kernfs: Fix UAF in polling when open file is released (bsc#1250379). - CVE-2025-39895: sched: Fix sched_numa_find_nth_cpu() if mask offline (bsc#1250721). - CVE-2025-39903: of_numa: fix uninitialized memory nodes causing kernel panic (bsc#1250749). - CVE-2025-39911: i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path (bsc#1250704). - CVE-2025-39947: net/mlx5e: Harden uplink netdev access against device unbind (bsc#1251232). - CVE-2025-39948: ice: fix Rx page leak on multi-buffer frames (bsc#1251233). - CVE-2025-39949: qed: Don't collect too many protection override GRC elements (bsc#1251177). - CVE-2025-39950: net/tcp: Fix a NULL pointer dereference when using TCP-AO with TCP_REPAIR (bsc#1251176). - CVE-2025-39955: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect() (bsc#1251804). - CVE-2025-39956: igc: don't fail igc_probe() on LED setup error (bsc#1251809). - CVE-2025-39963: io_uring: fix incorrect io_kiocb reference in io_link_skb (bsc#1251819). - CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047). - CVE-2025-39969: i40e: fix validation of VF state in get resources (bsc#1252044). - CVE-2025-39970: i40e: fix input validation logic for action_meta (bsc#1252051). - CVE-2025-39971: i40e: fix idx validation in config queues msg (bsc#1252052). - CVE-2025-39972: i40e: fix idx validation in i40e_validate_queue_map (bsc#1252039). - 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-2025-39979: net/mlx5: fs, add API for sharing HWS action by refcount (bsc#1252067). - CVE-2025-39984: net: tun: Update napi->skb after XDP process (bsc#1252081). - CVE-2025-39992: mm: swap: check for stable address space before operating on the VMA (bsc#1252076). - CVE-2025-40000: wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() (bsc#1252062). - CVE-2025-40005: spi: cadence-quadspi: Implement refcount to handle unbind during busy (bsc#1252349). - CVE-2025-40012: net/smc: fix warning in smc_rx_splice() when calling get_page() (bsc#1252330). - CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688). - CVE-2025-40040: mm/ksm: fix flag-dropping behavior in ksm_madvise (bsc#1252780). - CVE-2025-40051: vhost: vringh: Modify the return value check (bsc#1252858). - CVE-2025-40056: vhost: vringh: Fix copy_to_iter return value check (bsc#1252826). - CVE-2025-40060: coresight: trbe: Return NULL pointer for allocation failures (bsc#1252848). - CVE-2025-40078: bpf: Explicitly check accesses to bpf_sock_addr (bsc#1252789). - CVE-2025-40080: nbd: restrict sockets to TCP and UDP (bsc#1252774). - CVE-2025-40100: btrfs: do not assert we found block group item when creating free space tree (bsc#1252918). The following non security issues were fixed: - add bug reference to existing hv_netvsc change (bsc#1252265) - amd-pstate-ut: Reset amd-pstate driver mode after running selftests (bsc#1249226). - cgroup/cpuset: Remove remote_partition_check() & make update_cpumasks_hier() handle remote partition (bsc#1241166). - cpuset: Use new excpus for nocpu error check when enabling root partition (bsc#1241166). - cpuset: fix failure to enable isolated partition when containing isolcpus (bsc#1241166). - doc/README.SUSE: Correct the character used for TAINT_NO_SUPPORT The character was previously 'N', but upstream used it for TAINT_TEST, which prompted the change of TAINT_NO_SUPPORT to 'n'. - dpll: zl3073x: Add firmware loading functionality (bsc#1252253). - dpll: zl3073x: Add functions to access hardware registers (bsc#1252253). - dpll: zl3073x: Add low-level flash functions (bsc#1252253). - dpll: zl3073x: Add support to get fractional frequency offset (bsc#1252253). - dpll: zl3073x: Add support to get phase offset on connected input pin (bsc#1252253). - dpll: zl3073x: Add support to get/set esync on pins (bsc#1252253). - dpll: zl3073x: Fix double free in zl3073x_devlink_flash_update() (bsc#1252253). - dpll: zl3073x: Handle missing or corrupted flash configuration (bsc#1252253). - dpll: zl3073x: Implement devlink flash callback (bsc#1252253). - dpll: zl3073x: Increase maximum size of flash utility (bsc#1252253). - dpll: zl3073x: Refactor DPLL initialization (bsc#1252253). - drm/amd/pm: fix smu table id bound check issue in smu_cmn_update_table() (git-fixes). - drm/xe/guc: Prepare GuC register list and update ADS size for error capture (stable-fixes). - ixgbe: handle IXGBE_VF_FEATURES_NEGOTIATE mbox cmd (bsc#1247222). - ixgbe: handle IXGBE_VF_GET_PF_LINK_STATE mailbox operation (bsc#1247222). - ixgbevf: fix getting link speed data for E610 devices (bsc#1247222). - ixgbevf: fix mailbox API compatibility by negotiating supported features (bsc#1247222). - kbuild/modfinal: Link livepatches with module-common.o (bsc#1218644, bsc#1252270). - kdb: Replace deprecated strcpy() with memmove() in vkdb_printf() (bsc#1252939). - kernel-subpackage-spec: Do not doubly-sign modules (bsc#1251930). - nvme-auth: update sc_c in host response (git-fixes bsc#1249397). - perf hwmon_pmu: Fix uninitialized variable warning (perf-sle16-v6.13-userspace-update, git-fixes). - phy: cadence: cdns-dphy: Update calibration wait time for startup state machine (git-fixes). - powerpc/fadump: skip parameter area allocation when fadump is disabled (jsc#PED-9891 git-fixes). - proc: fix missing pde_set_flags() for net proc files (bsc#1248630) - proc: fix type confusion in pde_set_flags() (bsc#1248630) - rpm/check-for-config-changes: ignore CONFIG_SCHED_PROXY_EXEC, too (bsc#1250946) - scsi: storvsc: Prefer returning channel with the same CPU as on the I/O issuing CPU (bsc#1252267). - x86/microcode/AMD: Limit Entrysign signature checking to known generations (bsc#1252725). - x86/resctrl: Fix miscount of bandwidth event when reactivating previously unavailable RMID (bsc#1252734). - x86/resctrl: Refactor resctrl_arch_rmid_read() (bsc#1252734). - x86/virt/tdx: Mark memory cache state incoherent when making SEAMCALL (jsc#PED-348).

Exploit probability Not scored
Published November 26, 2025
Required by Not available
Last source change July 9, 2026

02 / AFFECTED SOFTWARE

Affected packages

SUSE:Linux Micro Extras 6.2 kernel-obs-build
SUSE:Linux Micro Extras 6.2 kernel-syms

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities SUSE-SU-2026:20561-1

The SUSE Linux Enterprise 16.0 kernel was updated to fix various security issues The following security issues were fixed: - CVE-2025-21816: hrtimers: Force migrate away hrtimers queued after (bsc#1238472). - CVE-2025-38653: proc: use the same treatment to check proc_lseek as ones for proc_read_iter et.al (bsc#1248630). - CVE-2025-38718: sctp: linearize cloned gso packets in sctp_rcv (bsc#1249161). - CVE-2025-39676: scsi: qla4xxx: Prevent a potential error pointer dereference (bsc#1249302). - CVE-2025-39702: ipv6: sr: Fix MAC comparison to be constant-time (bsc#1249317). - CVE-2025-39756: fs: Prevent file descriptor table allocations exceeding INT_MAX (bsc#1249512). - CVE-2025-39779: btrfs: subpage: keep TOWRITE tag until folio is cleaned (bsc#1249495). - CVE-2025-39812: sctp: initialize more fields in sctp_v6_from_sk() (bsc#1250202). - CVE-2025-39866: fs: writeback: fix use-after-free in __mark_inode_dirty() (bsc#1250455). - CVE-2025-39876: net: fec: Fix possible NPD in fec_enet_phy_reset_after_clk_enable() (bsc#1250400). - CVE-2025-39881: kernfs: Fix UAF in polling when open file is released (bsc#1250379). - CVE-2025-39895: sched: Fix sched_numa_find_nth_cpu() if mask offline (bsc#1250721). - CVE-2025-39903: of_numa: fix uninitialized memory nodes causing kernel panic (bsc#1250749). - CVE-2025-39911: i40e: fix IRQ freeing in i40e_vsi_request_irq_msix error path (bsc#1250704). - CVE-2025-39947: net/mlx5e: Harden uplink netdev access against device unbind (bsc#1251232). - CVE-2025-39948: ice: fix Rx page leak on multi-buffer frames (bsc#1251233). - CVE-2025-39949: qed: Don't collect too many protection override GRC elements (bsc#1251177). - CVE-2025-39950: net/tcp: Fix a NULL pointer dereference when using TCP-AO with TCP_REPAIR (bsc#1251176). - CVE-2025-39955: tcp: Clear tcp_sk(sk)->fastopen_rsk in tcp_disconnect() (bsc#1251804). - CVE-2025-39956: igc: don't fail igc_probe() on LED setup error (bsc#1251809). - CVE-2025-39963: io_uring: fix incorrect io_kiocb reference in io_link_skb (bsc#1251819). - CVE-2025-39968: i40e: add max boundary check for VF filters (bsc#1252047). - CVE-2025-39969: i40e: fix validation of VF state in get resources (bsc#1252044). - CVE-2025-39970: i40e: fix input validation logic for action_meta (bsc#1252051). - CVE-2025-39971: i40e: fix idx validation in config queues msg (bsc#1252052). - CVE-2025-39972: i40e: fix idx validation in i40e_validate_queue_map (bsc#1252039). - 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-2025-39979: net/mlx5: fs, add API for sharing HWS action by refcount (bsc#1252067). - CVE-2025-39984: net: tun: Update napi->skb after XDP process (bsc#1252081). - CVE-2025-39992: mm: swap: check for stable address space before operating on the VMA (bsc#1252076). - CVE-2025-40000: wifi: rtw89: fix use-after-free in rtw89_core_tx_kick_off_and_wait() (bsc#1252062). - CVE-2025-40005: spi: cadence-quadspi: Implement refcount to handle unbind during busy (bsc#1252349). - CVE-2025-40012: net/smc: fix warning in smc_rx_splice() when calling get_page() (bsc#1252330). - CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252688). - CVE-2025-40040: mm/ksm: fix flag-dropping behavior in ksm_madvise (bsc#1252780). - CVE-2025-40051: vhost: vringh: Modify the return value check (bsc#1252858). - CVE-2025-40056: vhost: vringh: Fix copy_to_iter return value check (bsc#1252826). - CVE-2025-40060: coresight: trbe: Return NULL pointer for allocation failures (bsc#1252848). - CVE-2025-40078: bpf: Explicitly check accesses to bpf_sock_addr (bsc#1252789). - CVE-2025-40080: nbd: restrict sockets to TCP and UDP (bsc#1252774). - CVE-2025-40100: btrfs: do not assert we found block group item when creating free space tree (bsc#1252918). The following non security issues were fixed: - add bug reference to existing hv_netvsc change (bsc#1252265) - amd-pstate-ut: Reset amd-pstate driver mode after running selftests (bsc#1249226). - cgroup/cpuset: Remove remote_partition_check() & make update_cpumasks_hier() handle remote partition (bsc#1241166). - cpuset: Use new excpus for nocpu error check when enabling root partition (bsc#1241166). - cpuset: fix failure to enable isolated partition when containing isolcpus (bsc#1241166). - doc/README.SUSE: Correct the character used for TAINT_NO_SUPPORT The character was previously 'N', but upstream used it for TAINT_TEST, which prompted the change of TAINT_NO_SUPPORT to 'n'. - dpll: zl3073x: Add firmware loading functionality (bsc#1252253). - dpll: zl3073x: Add functions to access hardware registers (bsc#1252253). - dpll: zl3073x: Add low-level flash functions (bsc#1252253). - dpll: zl3073x: Add support to get fractional frequency offset (bsc#1252253). - dpll: zl3073x: Add support to get phase offset on connected input pin (bsc#1252253). - dpll: zl3073x: Add support to get/set esync on pins (bsc#1252253). - dpll: zl3073x: Fix double free in zl3073x_devlink_flash_update() (bsc#1252253). - dpll: zl3073x: Handle missing or corrupted flash configuration (bsc#1252253). - dpll: zl3073x: Implement devlink flash callback (bsc#1252253). - dpll: zl3073x: Increase maximum size of flash utility (bsc#1252253). - dpll: zl3073x: Refactor DPLL initialization (bsc#1252253). - drm/amd/pm: fix smu table id bound check issue in smu_cmn_update_table() (git-fixes). - drm/xe/guc: Prepare GuC register list and update ADS size for error capture (stable-fixes). - ixgbe: handle IXGBE_VF_FEATURES_NEGOTIATE mbox cmd (bsc#1247222). - ixgbe: handle IXGBE_VF_GET_PF_LINK_STATE mailbox operation (bsc#1247222). - ixgbevf: fix getting link speed data for E610 devices (bsc#1247222). - ixgbevf: fix mailbox API compatibility by negotiating supported features (bsc#1247222). - kbuild/modfinal: Link livepatches with module-common.o (bsc#1218644, bsc#1252270). - kdb: Replace deprecated strcpy() with memmove() in vkdb_printf() (bsc#1252939). - kernel-subpackage-spec: Do not doubly-sign modules (bsc#1251930). - nvme-auth: update sc_c in host response (git-fixes bsc#1249397). - perf hwmon_pmu: Fix uninitialized variable warning (perf-sle16-v6.13-userspace-update, git-fixes). - phy: cadence: cdns-dphy: Update calibration wait time for startup state machine (git-fixes). - powerpc/fadump: skip parameter area allocation when fadump is disabled (jsc#PED-9891 git-fixes). - proc: fix missing pde_set_flags() for net proc files (bsc#1248630) - proc: fix type confusion in pde_set_flags() (bsc#1248630) - rpm/check-for-config-changes: ignore CONFIG_SCHED_PROXY_EXEC, too (bsc#1250946) - scsi: storvsc: Prefer returning channel with the same CPU as on the I/O issuing CPU (bsc#1252267). - x86/microcode/AMD: Limit Entrysign signature checking to known generations (bsc#1252725). - x86/resctrl: Fix miscount of bandwidth event when reactivating previously unavailable RMID (bsc#1252734). - x86/resctrl: Refactor resctrl_arch_rmid_read() (bsc#1252734). - x86/virt/tdx: Mark memory cache state incoherent when making SEAMCALL (jsc#PED-348).

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05 / REFERENCES

Further evidence