In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix RxGK token loading to check bounds rxrpc_preparse_xdr_yfs_rxgk() reads the raw key length and ticket length from the XDR token as u32 values and passes each through round_up(x, 4) before using the rounded value for validation and allocation. When the raw length is >= 0xfffffffd, round_up() wraps to 0, so the bounds check and kzalloc both use 0 while the subsequent memcpy still copies the original ~4 GiB value, producing a heap buffer overflow reachable from an unprivileged add_key() call. Fix this by: (1) Rejecting raw key lengths above AFSTOKEN_GK_KEY_MAX and raw ticket lengths above AFSTOKEN_GK_TOKEN_MAX before rounding, consistent with the caps that the RxKAD path already enforces via AFSTOKEN_RK_TIX_MAX. (2) Sizing the flexible-array allocation from the validated raw key length via struct_size_t() instead of the rounded value. (3) Caching the raw lengths so that the later field assignments and memcpy calls do not re-read from the token, eliminating a class of TOCTOU re-parse. The control path (valid token with lengths within bounds) is unaffected.

The remote Redhat Enterprise Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:55618 advisory.

    This is a kernel live patch module which can be loaded by the kpatch command line utility to modify the     code of a running kernel.  This patch module is targeted for kernel-6.12.0-211.16.1.el10_2.

    Security Fix(es):

    * kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)

    * kernel: ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (CVE-2026-43038)

    * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)

    * kernel: netfilter: nft_inner: Fix IPv6 inner_thoff desync (CVE-2026-46244)

    * kernel: net: sched: UAF via missing handler for TC_ACT_CONSUMED in tcf_qevent_handle (CVE-2026-64530)

    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-2026-27288 advisory.

    - crypto: ccp - copy IV using skcipher ivsize (CKI Backport Bot) [RHEL-188463] {CVE-2026-53016}
    - futex/requeue: Revert 'Prevent NULL pointer dereference in remove_waiter() on self-deadlock'' (CKI     Backport Bot) [RHEL-193250] {CVE-2026-53166}
    - futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock (CKI Backport Bot)     [RHEL-193250] {CVE-2026-43499}
    - locking/rtmutex: Skip remove_waiter() when waiter is not enqueued (CKI Backport Bot) [RHEL-193153]     {CVE-2026-43499}
    - rtmutex: Use waiter::task instead of current in remove_waiter() (CKI Backport Bot) [RHEL-193153]     {CVE-2026-43499}
    - md/bitmap: fix GPF in write_page caused by resize race (Nigel Croxon) [RHEL-174092] {CVE-2026-43163}
    - KVM: x86: Fix shadow paging use-after-free due to unexpected role (Paolo Bonzini) [RHEL-192407]     {CVE-2026-53359}
    - KVM: x86: Fix shadow paging use-after-free due to unexpected GFN (CKI Backport Bot) [RHEL-186698]     {CVE-2026-46113}
    - net/sched: ets: Always remove class from active list before deleting in ets_qdisc_change (CKI Backport     Bot) [RHEL-183007] {CVE-2025-71066}
    - sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL (CKI Backport Bot)     [RHEL-179854] {CVE-2026-46227}
    - eventpoll: Fix semi-unbounded recursion (Ian Kent) [RHEL-180776] {CVE-2025-38614}
    - eventpoll: fix ep_remove struct eventpoll / struct file UAF (Ian Kent) [RHEL-180776] {CVE-2026-46242}
    - eventpoll: defer struct eventpoll free to RCU grace period (Ian Kent) [RHEL-173832] {CVE-2026-43074}
    - smb/client: fix out-of-bounds read in smb2_compound_op() (Paulo Alcantara) [RHEL-180048]     {CVE-2026-46155}
    - procfs: fix missing RCU protection when reading real_parent in do_task_stat() (CKI Backport Bot)     [RHEL-181902] {CVE-2026-46259}
    - net/ipv6: ioam6: prevent schema length wraparound in trace fill (Antoine Tenart) [RHEL-174786]     {CVE-2026-43341}
    - net/mana: Null service_wq on setup error to prevent double destroy (CKI Backport Bot) [RHEL-180277]     {CVE-2026-43276}
    - net: mana: Fix double destroy_workqueue on service rescan PCI path (CKI Backport Bot) [RHEL-180277]     {CVE-2026-43276}
    - fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath (CKI Backport Bot) [RHEL-189491]     {CVE-2026-43112}
    - Enable workaround for ARM64 ERRATUM 4118414 (Mark Salter) [RHEL-183592] {CVE-2025-10263}
    - arm64: errata: Mitigate TLBI errata on Microsoft Azure Cobalt 100 CPU (Mark Salter) [RHEL-183592]     {CVE-2025-10263}
    - arm64: errata: Mitigate TLBI errata on NVIDIA Olympus CPU (Mark Salter) [RHEL-183592] {CVE-2025-10263}
    - arm64: errata: Mitigate TLBI errata on various Arm CPUs (Mark Salter) [RHEL-183592] {CVE-2025-10263}
    - arm64: cputype: Add C1-Ultra definitions (Mark Salter) [RHEL-183592] {CVE-2025-10263}
    - arm64: cputype: Add C1-Premium definitions (Mark Salter) [RHEL-183592] {CVE-2025-10263}
    - arm64: cputype: Add C1-Pro definitions (Mark Salter) [RHEL-183592] {CVE-2025-10263}
    - KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry (CKI Backport Bot)     [RHEL-183965] {CVE-2026-46316}
    - netfilter: nft_inner: Fix IPv6 inner_thoff desync (CKI Backport Bot) [RHEL-181936] {CVE-2026-46244}
    - drm/gem: Fix inconsistent plane dimension calculation in drm_gem_fb_init_with_funcs() (CKI Backport Bot)     [RHEL-179912] {CVE-2026-46209}
    - rxrpc: Fix rxrpc_input_call_event() to only unshare DATA packets (CKI Backport Bot) [RHEL-179566]     {CVE-2026-45998}
    - rxrpc: Fix potential UAF after skb_unshare() failure (CKI Backport Bot) [RHEL-179566] {CVE-2026-45998}
    - RDMA/mlx5: Fix error path fall-through in mlx5_ib_dev_res_srq_init() (CKI Backport Bot) [RHEL-180001]     {CVE-2026-46176}
    - crypto: tegra - Add missing CRYPTO_ALG_ASYNC (Vladislav Dronov) [RHEL-182759] {CVE-2026-31739}
    - RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CKI Backport Bot) [RHEL-179965]     {CVE-2026-46189}
    - ALSA: aloop: Fix peer runtime UAF during format-change stop (CKI Backport Bot) [RHEL-179317]     {CVE-2026-46090}
    - ALSA: usb-audio: Add sanity check for OOB writes at silencing (CKI Backport Bot) [RHEL-173937]     {CVE-2026-43279}
    - tcp: fix potential race in tcp_v6_syn_recv_sock() (Paolo Abeni) [RHEL-174242] {CVE-2026-43198}
    - scsi: qla2xxx: Completely fix fcport double free (Ewan D. Milne) [RHEL-179755] {CVE-2026-43414}
    - RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CKI Backport Bot) [RHEL-180155]     {CVE-2026-46117}
    - RDMA/iwcm: Fix workqueue list corruption by removing work_list (CKI Backport Bot) [RHEL-179665]     {CVE-2026-45898}
    - rxrpc: fix RESPONSE authenticator parser OOB read (CKI Backport Bot) [RHEL-171456] {CVE-2026-31636}
    - nvmet-tcp: fix race between ICReq handling and queue teardown (CKI Backport Bot) [RHEL-180106]     {CVE-2026-46135}
    - RDMA/mana: Validate rx_hash_key_len (CKI Backport Bot) [RHEL-180090] {CVE-2026-46145}
    - ipv6: icmp: clear skb2->cb[] in ip6_err_gen_icmpv6_unreach() (Guillaume Nault) [RHEL-172675]     {CVE-2026-43038}
    - net/sched: fix pedit partial COW leading to page cache corruption (Ivan Vecera) [RHEL-177380]     {CVE-2026-46331}
    - exit: prevent preemption of oopsing TASK_DEAD task (CKI Backport Bot) [RHEL-180009] {CVE-2026-46173}
    - crypto: caam - fix overflow on long hmac keys (CKI Backport Bot) [RHEL-179769] {CVE-2026-43330}

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 AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:27288 advisory.

    * kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)
      * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
      * kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)
      * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)
      * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)
      * kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)
      * kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)
      * kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)
      * kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330)
      * kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)
      * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)
      * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)
      * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)
      * kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)
      * kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)


    Bug Fix(es) and Enhancement(s):

      * AlmaLinux10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [almalinux-10.2.z]     (JIRA:AlmaLinux-166047)
      * AlmaLinux9.5 crash due to lpfc NULL ndlp->vport [almalinux-10.2.z] (JIRA:AlmaLinux-171774)
      * objtool static_call check blocks build of out-of-tree livepatch modules on AlmaLinux 10.2 GA kernels ?     missing upstream revert f495054bd12e (JIRA:AlmaLinux-178495)
      * ibmveth Adapter Freeze with Small MSS [almalinux-10.2.z] (JIRA:AlmaLinux-179723)
      * rbd: eliminate a race in lock_dwork draining on unmap [almalinux-10.2.z] (JIRA:AlmaLinux-183127)
      * AlmaLinux10.0 - s390/mm: Add missing secure storage access fixups [almalinux-10.2.z]     (JIRA:AlmaLinux-183319)
      * [AlmaLinux10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:AlmaLinux-182299)

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 RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:27288 advisory.

    * kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)

    * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)

    * kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)

    * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

    * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)

    * kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)

    * kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)

    * kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)

    * kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330)

    * kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

    * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

    * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)

    * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

    * kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

    * kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

    Bug Fix(es) and Enhancement(s):

    * Rocky Linux10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-10.2.z] (JIRA:Rocky     Linux-166047)

    * Rocky Linux9.5 crash due to lpfc NULL ndlp->vport [rhel-10.2.z] (JIRA:Rocky Linux-171774)

    * objtool static_call check blocks build of out-of-tree livepatch modules on Rocky Linux 10.2 GA kernels ?     missing upstream revert f495054bd12e (JIRA:Rocky Linux-178495)

    * ibmveth Adapter Freeze with Small MSS [rhel-10.2.z] (JIRA:Rocky Linux-179723)

    * rbd: eliminate a race in lock_dwork draining on unmap [rhel-10.2.z] (JIRA:Rocky Linux-183127)

    * Rocky Linux10.0 - s390/mm: Add missing secure storage access fixups [rhel-10.2.z] (JIRA:Rocky     Linux-183319)

    * [Rocky Linux10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:Rocky Linux-182299)

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 Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27288 advisory.

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

    Security Fix(es):

    * kernel: can: isotp: fix tx.buf use-after-free in isotp_sendmsg() (CVE-2026-31474)

    * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)

    * kernel: rxrpc: Fix RxGK token loading to check bounds (CVE-2026-31641)

    * kernel: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

    * kernel: Buffer overflow in drivers/xen/sys-hypervisor.c (CVE-2026-31786)

    * kernel: net: mana: fix use-after-free in add_adev() error path (CVE-2026-43056)

    * kernel: Bluetooth: hci_sync: fix stack buffer overflow in hci_le_big_create_sync (CVE-2026-31772)

    * kernel: bnxt_en: Fix RSS context delete logic (CVE-2026-43260)

    * kernel: crypto: caam - fix overflow on long hmac keys (CVE-2026-43330)

    * kernel: net/sched: act_pedit: extend the writable skb range per key (CVE-2026-46331)

    * kernel: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CVE-2026-46056)

    * kernel: wifi: mac80211: drop stray 'static' from fast-RX rx_result (CVE-2026-46152)

    * kernel: wifi: mac80211: remove station if connection prep fails (CVE-2026-46125)

    * kernel: exit: prevent preemption of oopsing TASK_DEAD task (CVE-2026-46173)

    * kernel: wifi: mac80211: use safe list iteration in radar detect work (CVE-2026-46166)

    Bug Fix(es) and Enhancement(s):

    * RHEL10.0 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-10.2.z] (JIRA:RHEL-166047)

    * RHEL9.5 crash due to lpfc NULL ndlp->vport [rhel-10.2.z] (JIRA:RHEL-171774)

    * objtool static_call check blocks build of out-of-tree livepatch modules on RHEL 10.2 GA kernels ?     missing upstream revert f495054bd12e (JIRA:RHEL-178495)

    * ibmveth Adapter Freeze with Small MSS [rhel-10.2.z] (JIRA:RHEL-179723)

    * rbd: eliminate a race in lock_dwork draining on unmap [rhel-10.2.z] (JIRA:RHEL-183127)

    * RHEL10.0 - s390/mm: Add missing secure storage access fixups [rhel-10.2.z] (JIRA:RHEL-183319)

    * [RHEL10.2.z] Enable Pretimeout Watchdog Panic Functionality on x86 (JIRA:RHEL-182299)

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

  - rxrpc: Fix RxGK token loading to check bounds rxrpc_preparse_xdr_yfs_rxgk() reads the raw key length and     ticket length from the XDR token as u32 values and passes each through round_up(x, 4) before using the     rounded value for validation and allocation. When the raw length is >= 0xfffffffd, round_up() wraps to 0,     so the bounds check and kzalloc both use 0 while the subsequent memcpy still copies the original ~4 GiB     value, producing a heap buffer overflow reachable from an unprivileged add_key() call. Fix this by: (1)     Rejecting raw key lengths above AFSTOKEN_GK_KEY_MAX and raw ticket lengths above AFSTOKEN_GK_TOKEN_MAX     before rounding, consistent with the caps that the RxKAD path already enforces via AFSTOKEN_RK_TIX_MAX.
    (2) Sizing the flexible-array allocation from the validated raw key length via struct_size_t() instead of     the rounded value. (3) Caching the raw lengths so that the later field assignments and memcpy calls do not     re-read from the token, eliminating a class of TOCTOU re-parse. The control path (valid token with lengths     within bounds) is unaffected. (CVE-2026-31641)

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

ID	Name	Product	Family	Type	Severity
337343	RHEL 10 : kpatch-patch-6_12_0-211_16_1 (RHSA-2026:55618)	Nessus	Red Hat Local Security Checks	Local	critical
332982	Oracle Linux 10 : kernel (ELSA-2026-27288)	Nessus	Oracle Linux Local Security Checks	Local	high
323100	AlmaLinux 10 : kernel (ALSA-2026:27288)	Nessus	Alma Linux Local Security Checks	Local	high
321956	RockyLinux 10 : kernel (RLSA-2026:27288)	Nessus	Rocky Linux Local Security Checks	Local	high
321829	RHEL 10 : kernel (RHSA-2026:27288)	Nessus	Red Hat Local Security Checks	Local	high
310512	Linux Distros Unpatched Vulnerability : CVE-2026-31641	Nessus	Misc.	Local	high

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