In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fs, fix UAF in flow counter release Fix a kernel trace [1] caused by releasing an HWS action of a local flow counter in mlx5_cmd_hws_delete_fte(), where the HWS action refcount and mutex were not initialized and the counter struct could already be freed when deleting the rule. Fix it by adding the missing initializations and adding refcount for the local flow counter struct. [1] Kernel log: Call Trace: <TASK> dump_stack_lvl+0x34/0x48 mlx5_fs_put_hws_action.part.0.cold+0x21/0x94 [mlx5_core] mlx5_fc_put_hws_action+0x96/0xad [mlx5_core] mlx5_fs_destroy_fs_actions+0x8b/0x152 [mlx5_core] mlx5_cmd_hws_delete_fte+0x5a/0xa0 [mlx5_core] del_hw_fte+0x1ce/0x260 [mlx5_core] mlx5_del_flow_rules+0x12d/0x240 [mlx5_core] ? ttwu_queue_wakelist+0xf4/0x110 mlx5_ib_destroy_flow+0x103/0x1b0 [mlx5_ib] uverbs_free_flow+0x20/0x50 [ib_uverbs] destroy_hw_idr_uobject+0x1b/0x50 [ib_uverbs] uverbs_destroy_uobject+0x34/0x1a0 [ib_uverbs] uobj_destroy+0x3c/0x80 [ib_uverbs] ib_uverbs_run_method+0x23e/0x360 [ib_uverbs] ? uverbs_finalize_object+0x60/0x60 [ib_uverbs] ib_uverbs_cmd_verbs+0x14f/0x2c0 [ib_uverbs] ? do_tty_write+0x1a9/0x270 ? file_tty_write.constprop.0+0x98/0xc0 ? new_sync_write+0xfc/0x190 ib_uverbs_ioctl+0xd7/0x160 [ib_uverbs] __x64_sys_ioctl+0x87/0xc0 do_syscall_64+0x59/0x90

The remote MiracleLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-11544:99 advisory.

    * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)
      * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:22865 advisory.

    * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)
      * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-22865 advisory.

    - can: j1939: add missing calls in NETDEV_UNREGISTER notification handler (CKI Backport Bot) [RHEL-124105]     {CVE-2025-39925}
    - can: j1939: implement NETDEV_UNREGISTER notification handler (CKI Backport Bot) [RHEL-124105]     {CVE-2025-39925}
    - net/mlx5: fs, fix UAF in flow counter release (Michal Schmidt) [RHEL-124428] {CVE-2025-39979}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:22854 advisory.

    * kernel: cifs: Fix oops due to uninitialised variable (CVE-2025-38737)

    * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)

    * kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CVE-2025-39982)

    * kernel: Bluetooth: MGMT: Fix possible UAFs (CVE-2025-39981)

    * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)

    * kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue (CVE-2025-39983)

    * kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CVE-2025-40047)

    * kernel: iommu/vt-d: Disallow dirty tracking if incoherent page walk (CVE-2025-40058)

    * kernel: ice: ice_adapter: release xa entry on adapter allocation failure (CVE-2025-40185)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:22865 advisory.

    * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)

    * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2025:22854 advisory.

    * kernel: cifs: Fix oops due to uninitialised variable (CVE-2025-38737)
      * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)
      * kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CVE-2025-39982)
      * kernel: Bluetooth: MGMT: Fix possible UAFs (CVE-2025-39981)
      * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)
      * kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue (CVE-2025-39983)
      * kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CVE-2025-40047)
      * kernel: iommu/vt-d: Disallow dirty tracking if incoherent page walk (CVE-2025-40058)
      * kernel: ice: ice_adapter: release xa entry on adapter allocation failure (CVE-2025-40185)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:22865 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)

    * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:22854 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: cifs: Fix oops due to uninitialised variable (CVE-2025-38737)

    * kernel: can: j1939: implement NETDEV_UNREGISTER notification handler (CVE-2025-39925)

    * kernel: Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CVE-2025-39982)

    * kernel: Bluetooth: MGMT: Fix possible UAFs (CVE-2025-39981)

    * kernel: net/mlx5: fs, fix UAF in flow counter release (CVE-2025-39979)

    * kernel: Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue (CVE-2025-39983)

    * kernel: io_uring/waitid: always prune wait queue entry in io_waitid_wait() (CVE-2025-40047)

    * kernel: iommu/vt-d: Disallow dirty tracking if incoherent page walk (CVE-2025-40058)

    * kernel: ice: ice_adapter: release xa entry on adapter allocation failure (CVE-2025-40185)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-22854 advisory.

    - iommu/vt-d: Disallow dirty tracking if incoherent page walk (CKI Backport Bot) [RHEL-125482]     {CVE-2025-40058}
    - net/mlx5: fs, fix UAF in flow counter release (Michal Schmidt) [RHEL-124432] {CVE-2025-39979}
    - Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete (CKI Backport Bot) [RHEL-122901]     {CVE-2025-39981}
    - Bluetooth: MGMT: Fix sparse errors (CKI Backport Bot) [RHEL-122901] {CVE-2025-39981}
    - Bluetooth: MGMT: Fix possible UAFs (CKI Backport Bot) [RHEL-122901] {CVE-2025-39981}
    - Bluetooth: hci_sync: fix set_local_name race condition (CKI Backport Bot) [RHEL-122901] {CVE-2025-39981}
    - Bluetooth: MGMT: set_mesh: update LE scan interval and window (CKI Backport Bot) [RHEL-122901]     {CVE-2025-39981}
    - Bluetooth: MGMT: Protect mgmt_pending list with its own lock (CKI Backport Bot) [RHEL-122901]     {CVE-2025-39981}
    - Bluetooth: MGMT: Fix UAF on mgmt_remove_adv_monitor_complete (CKI Backport Bot) [RHEL-122901]     {CVE-2025-39981}
    - Bluetooth: hci_event: Fix UAF in hci_conn_tx_dequeue (CKI Backport Bot) [RHEL-124134] {CVE-2025-39983}
    - can: j1939: add missing calls in NETDEV_UNREGISTER notification handler (CKI Backport Bot) [RHEL-124110]     {CVE-2025-39925}
    - can: j1939: implement NETDEV_UNREGISTER notification handler (CKI Backport Bot) [RHEL-124110]     {CVE-2025-39925}
    - Bluetooth: hci_event: Fix UAF in hci_acl_create_conn_sync (CKI Backport Bot) [RHEL-123824]     {CVE-2025-39982}
    - ice: ice_adapter: release xa entry on adapter allocation failure (CKI Backport Bot) [RHEL-128472]     {CVE-2025-40185}
    - cifs: Fix oops due to uninitialised variable (CKI Backport Bot) [RHEL-120562] {CVE-2025-38737}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2025-20091-1 advisory.

    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).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: net/mlx5: fs, fix UAF in flow counter     release Fix a kernel trace [1] caused by releasing an HWS action of a local flow counter in     mlx5_cmd_hws_delete_fte(), where the HWS action refcount and mutex were not initialized and the counter     struct could already be freed when deleting the rule. Fix it by adding the missing initializations and     adding refcount for the local flow counter struct. [1] Kernel log: Call Trace: <TASK>     dump_stack_lvl+0x34/0x48 mlx5_fs_put_hws_action.part.0.cold+0x21/0x94 [mlx5_core]     mlx5_fc_put_hws_action+0x96/0xad [mlx5_core] mlx5_fs_destroy_fs_actions+0x8b/0x152 [mlx5_core]     mlx5_cmd_hws_delete_fte+0x5a/0xa0 [mlx5_core] del_hw_fte+0x1ce/0x260 [mlx5_core]     mlx5_del_flow_rules+0x12d/0x240 [mlx5_core] ? ttwu_queue_wakelist+0xf4/0x110     mlx5_ib_destroy_flow+0x103/0x1b0 [mlx5_ib] uverbs_free_flow+0x20/0x50 [ib_uverbs]     destroy_hw_idr_uobject+0x1b/0x50 [ib_uverbs] uverbs_destroy_uobject+0x34/0x1a0 [ib_uverbs]     uobj_destroy+0x3c/0x80 [ib_uverbs] ib_uverbs_run_method+0x23e/0x360 [ib_uverbs] ?     uverbs_finalize_object+0x60/0x60 [ib_uverbs] ib_uverbs_cmd_verbs+0x14f/0x2c0 [ib_uverbs] ?     do_tty_write+0x1a9/0x270 ? file_tty_write.constprop.0+0x98/0xc0 ? new_sync_write+0xfc/0x190     ib_uverbs_ioctl+0xd7/0x160 [ib_uverbs] __x64_sys_ioctl+0x87/0xc0 do_syscall_64+0x59/0x90 (CVE-2025-39979)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
282937	MiracleLinux 9 : kernel-5.14.0-611.13.1.el9_7 (AXSA:2025-11544:99)	Nessus	Miracle Linux Local Security Checks	medium
278984	AlmaLinux 9 : kernel (ALSA-2025:22865)	Nessus	Alma Linux Local Security Checks	medium
278658	Oracle Linux 9 : kernel (ELSA-2025-22865)	Nessus	Oracle Linux Local Security Checks	medium
278630	RockyLinux 10 : kernel (RLSA-2025:22854)	Nessus	Rocky Linux Local Security Checks	medium
278620	RockyLinux 9 : kernel (RLSA-2025:22865)	Nessus	Rocky Linux Local Security Checks	medium
278126	AlmaLinux 10 : kernel (ALSA-2025:22854)	Nessus	Alma Linux Local Security Checks	medium
277860	RHEL 9 : kernel (RHSA-2025:22865)	Nessus	Red Hat Local Security Checks	critical
277828	RHEL 10 : kernel (RHSA-2025:22854)	Nessus	Red Hat Local Security Checks	medium
277821	Oracle Linux 10 : kernel (ELSA-2025-22854)	Nessus	Oracle Linux Local Security Checks	medium
277016	openSUSE 16 Security Update : kernel (openSUSE-SU-2025-20091-1)	Nessus	SuSE Local Security Checks	high
271545	Linux Distros Unpatched Vulnerability : CVE-2025-39979	Nessus	Misc.	high

Detections

Analytics

CVE-2025-39979

high

Tenable Plugins

medium

medium

medium

medium

medium

medium

critical

medium

medium

high

high