In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify rvu_mbox_handler_rep_event_notify() in drivers/net/ethernet/marvell/ octeontx2/af/rvu_rep.c queues a sender-controlled REP_EVENT_NOTIFY request body verbatim, and rvu_rep_up_notify() then forwards event->pcifunc (the nested body field, distinct from the AF-normalised header pcifunc) into rvu_get_pfvf(), rvu_get_pf() and the AF->PF mailbox device index without any bounds check. A VF attached to a PF that has been put into switchdev representor mode reaches this path: the VF mailbox handler otx2_pfvf_mbox_handler() forwards every message id including MBOX_MSG_REP_EVENT_NOTIFY to AF without an allowlist, and the AF dispatcher rewrites only msg->pcifunc, leaving struct rep_event::pcifunc attacker-controlled. The sibling rvu_mbox_handler_esw_cfg() refuses requests whose header pcifunc is not rvu->rep_pcifunc; this handler has no equivalent gate. An out-of-range body pcifunc selects an &rvu->pf[]/&rvu->hwvf[] element past the allocated array and, for RVU_EVENT_MAC_ADDR_CHANGE, turns into a six-byte attacker-chosen OOB ether_addr_copy() target inside the queued worker; KASAN reports a slab-out-of-bounds write in rvu_rep_wq_handler. Reject malformed requests at the handler entry by gating on is_pf_func_valid(), which is already the canonical PF/VF range check in this driver; expose it via rvu.h so callers in rvu_rep.c can use it instead of open-coding the same range arithmetic.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:67470 advisory.

    * kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)

    * kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)

    * kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)

    * kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)

    * kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)

    * kernel: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (CVE-2026-72045)

    * kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CVE-2026-74556)

    Bug Fix(es) and Enhancement(s):

    * gfs2: bufdata leaks [rhel-9.8.z] (JIRA:Rocky Linux-178223)

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 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:68507 advisory.

    * kernel: soc: qcom: socinfo: Avoid out of bounds read of serial number (CVE-2024-58007)

    * kernel: Linux kernel t7xx WWAN driver: Denial of Service via buffer overflow (CVE-2026-23172)

    * kernel: net: ena: PHC: Fix potential use-after-free in get_timestamp (CVE-2026-52971)

    * kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CVE-2026-53176)

    * kernel: ALSA: timer: Forcibly close timer instances at closing (CVE-2026-53193)

    * kernel: ALSA: timer: Fix UAF at snd_timer_user_params() (CVE-2026-53192)

    * kernel: wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap (CVE-2026-63869)

    * kernel: ALSA: seq: Serialize UMP output teardown with event_input (CVE-2026-64029)

    * kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)

    * kernel: wifi: iwlwifi: mvm: fix driver-set TX rates on old devices (CVE-2026-64176)

    * kernel: wifi: iwlwifi: mld: stop TX during firmware restart (CVE-2026-64175)

    * kernel: netfilter: handle unreadable frags (CVE-2026-64414)

    * kernel: hwrng: virtio: clamp device-reported used.len at copy_data() (CVE-2026-64456)

    * kernel: Linux kernel: ALSA timer use-after-free vulnerability allows privilege escalation     (CVE-2026-68200)

    * kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)

    * kernel: Linux kernel (ice): Denial of Service via out-of-range ptype in VIRTCHNL (CVE-2026-68128)

    * kernel: Linux kernel: ath9k Wi-Fi driver use-after-free vulnerability leading to system crash     (CVE-2026-68363)

    * kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)

    * kernel: dm_early_create: fix freeing used table on dm_resume failure (CVE-2026-72102)

    Bug Fix(es) and Enhancement(s):

    * nouveau vga_switcheroo binding holds Realtek ALC245 converter stream open ? analog output (device 0)     returns EBUSY [rhel-10.2.z] (JIRA:Rocky Linux-239776)

    * Rocky Linux 9.8: Multiuser Kerberized DFS shares fail to mount with UID mount option [rhel-10.2.z]     (JIRA:Rocky Linux-254105)

    * RHIVOS - [backport] S32G Fix STM driver linking failing modpost (JIRA:Rocky Linux-255225)

    * RHIVOS - [backport] S32G Driver Enablement - OCOTP (JIRA:Rocky Linux-255516)

    * RHIVOS - [backport] S32G Driver Enablement - INA231 (JIRA:Rocky Linux-255518)

    * RHIVOS - [backport] S32G Driver Enablement - PIT (JIRA:Rocky Linux-255519)

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-2026:68507 advisory.

    * kernel: soc: qcom: socinfo: Avoid out of bounds read of serial number (CVE-2024-58007)
      * kernel: Linux kernel t7xx WWAN driver: Denial of Service via buffer overflow (CVE-2026-23172)
      * kernel: net: ena: PHC: Fix potential use-after-free in get_timestamp (CVE-2026-52971)
      * kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CVE-2026-53176)
      * kernel: ALSA: timer: Forcibly close timer instances at closing (CVE-2026-53193)
      * kernel: ALSA: timer: Fix UAF at snd_timer_user_params() (CVE-2026-53192)
      * kernel: wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap (CVE-2026-63869)
      * kernel: ALSA: seq: Serialize UMP output teardown with event_input (CVE-2026-64029)
      * kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)
      * kernel: wifi: iwlwifi: mvm: fix driver-set TX rates on old devices (CVE-2026-64176)
      * kernel: wifi: iwlwifi: mld: stop TX during firmware restart (CVE-2026-64175)
      * kernel: netfilter: handle unreadable frags (CVE-2026-64414)
      * kernel: hwrng: virtio: clamp device-reported used.len at copy_data() (CVE-2026-64456)
      * kernel: Linux kernel: ALSA timer use-after-free vulnerability allows privilege escalation     (CVE-2026-68200)
      * kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change     (CVE-2026-68143)
      * kernel: Linux kernel (ice): Denial of Service via out-of-range ptype in VIRTCHNL (CVE-2026-68128)
      * kernel: Linux kernel: ath9k Wi-Fi driver use-after-free vulnerability leading to system crash     (CVE-2026-68363)
      * kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)
      * kernel: dm_early_create: fix freeing used table on dm_resume failure (CVE-2026-72102)


    Bug Fix(es) and Enhancement(s):

      * nouveau vga_switcheroo binding holds Realtek ALC245 converter stream open ? analog output (device 0)     returns EBUSY [almalinux-10.2.z] (JIRA:AlmaLinux-239776)
      * AlmaLinux 9.8: Multiuser Kerberized DFS shares fail to mount with UID mount option [almalinux-10.2.z]     (JIRA:AlmaLinux-254105)
      * RHIVOS - [backport] S32G Fix STM driver linking failing modpost (JIRA:AlmaLinux-255225)
      * RHIVOS - [backport] S32G Driver Enablement - OCOTP (JIRA:AlmaLinux-255516)
      * RHIVOS - [backport] S32G Driver Enablement - INA231 (JIRA:AlmaLinux-255518)
      * RHIVOS - [backport] S32G Driver Enablement - PIT (JIRA:AlmaLinux-255519)

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 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-68507 advisory.

    - wifi: ath9k: hif_usb: don't dereference hif_dev after re-arming firmware request (Izabela Bakollari)     [RHEL-241004] {CVE-2026-68363}
    - wifi: iwlwifi: mld: stop TX during firmware restart (Izabela Bakollari) [RHEL-243307] {CVE-2026-64175}
    - wifi: iwlwifi: mvm: fix driver-set TX rates on old devices (Izabela Bakollari) [RHEL-243363]     {CVE-2026-64176}
    - net: wwan: t7xx: fix potential skb->frags overflow in RX path (Izabela Bakollari) [RHEL-245528]     {CVE-2026-23172}
    - wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap (Izabela Bakollari)     [RHEL-246405] {CVE-2026-63869}
    - octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (Michal Schmidt) [RHEL-231041]     {CVE-2026-72045}
    - octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (Michal Schmidt) [RHEL-231041]     {CVE-2026-63923}
    - dm_early_create: fix freeing used table on dm_resume failure (CKI Backport Bot) [RHEL-244953]     {CVE-2026-72102}
    - net: slip: serialize receive against buffer reallocation (CKI Backport Bot) [RHEL-241018]     {CVE-2026-68143}
    - net: qrtr: restrict socket creation to the initial network namespace (CKI Backport Bot) [RHEL-240243]     {CVE-2026-68294}
    - ice: reject out-of-range ptype in ice_parser_profile_init (CKI Backport Bot) [RHEL-237211]     {CVE-2026-68128}
    - ALSA: timer: don't re-enter an instance callback that is still running (CKI Backport Bot) [RHEL-237201]     {CVE-2026-68200}
    - netfilter: handle unreadable frags (CKI Backport Bot) [RHEL-234265] {CVE-2026-64414}
    - net: ena: PHC: Fix potential use-after-free in get_timestamp (CKI Backport Bot) [RHEL-230631]     {CVE-2026-52971}
    - ALSA: timer: Fix UAF at snd_timer_user_params() (CKI Backport Bot) [RHEL-228700] {CVE-2026-53192}
    - ALSA: seq: Serialize UMP output teardown with event_input (CKI Backport Bot) [RHEL-227727]     {CVE-2026-64029}
    - ALSA: timer: Clear SNDRV_TIMER_IFLG_DEAD once the close completes (CKI Backport Bot) [RHEL-227086]     {CVE-2026-53193}
    - ALSA: timer: Forcibly close timer instances at closing (CKI Backport Bot) [RHEL-227086] {CVE-2026-53193}
    - hwrng: virtio: clamp device-reported used.len at copy_data() (CKI Backport Bot) [RHEL-225748]     {CVE-2026-64456}
    - IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CKI Backport Bot) [RHEL-191611]     {CVE-2026-53176}

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 Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:68507 advisory.

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

    Security Fix(es):

    * kernel: soc: qcom: socinfo: Avoid out of bounds read of serial number (CVE-2024-58007)

    * kernel: Linux kernel t7xx WWAN driver: Denial of Service via buffer overflow (CVE-2026-23172)

    * kernel: net: ena: PHC: Fix potential use-after-free in get_timestamp (CVE-2026-52971)

    * kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN (CVE-2026-53176)

    * kernel: ALSA: timer: Forcibly close timer instances at closing (CVE-2026-53193)

    * kernel: ALSA: timer: Fix UAF at snd_timer_user_params() (CVE-2026-53192)

    * kernel: wifi: mac80211: limit injected antenna index in ieee80211_parse_tx_radiotap (CVE-2026-63869)

    * kernel: ALSA: seq: Serialize UMP output teardown with event_input (CVE-2026-64029)

    * kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)

    * kernel: wifi: iwlwifi: mvm: fix driver-set TX rates on old devices (CVE-2026-64176)

    * kernel: wifi: iwlwifi: mld: stop TX during firmware restart (CVE-2026-64175)

    * kernel: netfilter: handle unreadable frags (CVE-2026-64414)

    * kernel: hwrng: virtio: clamp device-reported used.len at copy_data() (CVE-2026-64456)

    * kernel: Linux kernel: ALSA timer use-after-free vulnerability allows privilege escalation     (CVE-2026-68200)

    * kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)

    * kernel: Linux kernel (ice): Denial of Service via out-of-range ptype in VIRTCHNL (CVE-2026-68128)

    * kernel: Linux kernel: ath9k Wi-Fi driver use-after-free vulnerability leading to system crash     (CVE-2026-68363)

    * kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)

    * kernel: dm_early_create: fix freeing used table on dm_resume failure (CVE-2026-72102)

    Bug Fix(es) and Enhancement(s):

    * nouveau vga_switcheroo binding holds Realtek ALC245 converter stream open ? analog output (device 0)     returns EBUSY [rhel-10.2.z] (JIRA:RHEL-239776)

    * RHEL 9.8: Multiuser Kerberized DFS shares fail to mount with UID mount option [rhel-10.2.z]     (JIRA:RHEL-254105)

    * RHIVOS - [backport] S32G Fix STM driver linking failing modpost (JIRA:RHEL-255225)

    * RHIVOS - [backport] S32G Driver Enablement - OCOTP (JIRA:RHEL-255516)

    * RHIVOS - [backport] S32G Driver Enablement - INA231 (JIRA:RHEL-255518)

    * RHIVOS - [backport] S32G Driver Enablement - PIT (JIRA:RHEL-255519)

    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 AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:67470 advisory.

    * kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)
      * kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)
      * kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)
      * kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change     (CVE-2026-68143)
      * kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)
      * kernel: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (CVE-2026-72045)
      * kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CVE-2026-74556)


    Bug Fix(es) and Enhancement(s):

      * gfs2: bufdata leaks [almalinux-9.8.z] (JIRA:AlmaLinux-178223)

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-2026-674700 advisory.

    - scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CKI Backport Bot)     [RHEL-254594] {CVE-2026-74556}
    - octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (Michal Schmidt) [RHEL-242822]     {CVE-2026-72045}
    - octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (Michal Schmidt) [RHEL-231042]     {CVE-2026-63923}
    - net: qrtr: restrict socket creation to the initial network namespace (CKI Backport Bot) [RHEL-240242]     {CVE-2026-68294}
    - net: slip: serialize receive against buffer reallocation (CKI Backport Bot) [RHEL-237383]     {CVE-2026-68143}
    - security/keys: fix missed RCU read section on lookup (CKI Backport Bot) [RHEL-225660] {CVE-2026-64015}

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 Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:67470 advisory.

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

    Security Fix(es):

    * kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)

    * kernel: security/keys: fix missed RCU read section on lookup (CVE-2026-64015)

    * kernel: octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify (CVE-2026-63923)

    * kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change (CVE-2026-68143)

    * kernel: net: qrtr: restrict socket creation to the initial network namespace (CVE-2026-68294)

    * kernel: octeontx2-af: cn10k: restrict VF LMTLINE sharing to its own PF (CVE-2026-72045)

    * kernel: scsi: libiscsi_tcp: Bound SCSI Response data segment to the connection buffer (CVE-2026-74556)

    Bug Fix(es) and Enhancement(s):

    * gfs2: bufdata leaks [rhel-9.8.z] (JIRA:RHEL-178223)

    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.

  - In the Linux kernel, the following vulnerability has been resolved: octeontx2-af: validate body pcifunc in     rvu_mbox_handler_rep_event_notify rvu_mbox_handler_rep_event_notify() in drivers/net/ethernet/marvell/     octeontx2/af/rvu_rep.c queues a sender-controlled REP_EVENT_NOTIFY request body verbatim, and     rvu_rep_up_notify() then forwards event->pcifunc (the nested body field, distinct from the AF-normalised     header pcifunc) into rvu_get_pfvf(), rvu_get_pf() and the AF->PF mailbox device index without any bounds     check. A VF attached to a PF that has been put into switchdev representor mode reaches this path: the VF     mailbox handler otx2_pfvf_mbox_handler() forwards every message id including MBOX_MSG_REP_EVENT_NOTIFY to     AF without an allowlist, and the AF dispatcher rewrites only msg->pcifunc, leaving struct     rep_event::pcifunc attacker-controlled. The sibling rvu_mbox_handler_esw_cfg() refuses requests whose     header pcifunc is not rvu->rep_pcifunc; this handler has no equivalent gate. An out-of-range body pcifunc     selects an &rvu->pf[]/&rvu->hwvf[] element past the allocated array and, for RVU_EVENT_MAC_ADDR_CHANGE,     turns into a six-byte attacker-chosen OOB ether_addr_copy() target inside the queued worker; KASAN reports     a slab-out-of-bounds write in rvu_rep_wq_handler. Reject malformed requests at the handler entry by gating     on is_pf_func_valid(), which is already the canonical PF/VF range check in this driver; expose it via     rvu.h so callers in rvu_rep.c can use it instead of open-coding the same range arithmetic.
    (CVE-2026-63923)

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

ID	Name	Product	Family	Type	Severity
349085	RockyLinux 9 : kernel (RLSA-2026:67470)	Nessus	Rocky Linux Local Security Checks	Local	critical
348576	RockyLinux 10 : kernel (RLSA-2026:68507)	Nessus	Rocky Linux Local Security Checks	Local	high
348288	AlmaLinux 10 : kernel (ALSA-2026:68507)	Nessus	Alma Linux Local Security Checks	Local	high
348157	Oracle Linux 10 : kernel (ELSA-2026-68507)	Nessus	Oracle Linux Local Security Checks	Local	high
347900	SUSE SLED15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2026:4254-1)	Nessus	SuSE Local Security Checks	Local	high
346922	RHEL 10 : kernel (RHSA-2026:68507)	Nessus	Red Hat Local Security Checks	Local	high
346866	AlmaLinux 9 : kernel (ALSA-2026:67470)	Nessus	Alma Linux Local Security Checks	Local	critical
346418	Oracle Linux 9 : ELSA-2026-67470-0: / kernel (ELSA-2026-674700)	Nessus	Oracle Linux Local Security Checks	Local	critical
345861	RHEL 9 : kernel (RHSA-2026:67470)	Nessus	Red Hat Local Security Checks	Local	critical
343532	Ubuntu 24.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (GCP) vulnerabilities (USN-8728-1)	Nessus	Ubuntu Local Security Checks	Local	high
340681	Ubuntu 24.04 LTS / 26.04 LTS / Pro Realtime 24.04 LTS : Linux kernel (NVIDIA) vulnerabilities (USN-8663-1)	Nessus	Ubuntu Local Security Checks	Local	high
340045	Ubuntu 26.04 LTS : Linux kernel (NVIDIA BaseOS) vulnerabilities (USN-8664-1)	Nessus	Ubuntu Local Security Checks	Local	high
335080	openSUSE 16: cluster-md-kmp-64kb / cluster-md-kmp-azure / cluster-md-kmp-default / etc (openSUSE-SU-2026:21555-1)	Nessus	SuSE Local Security Checks	Local	high
328072	Linux Distros Unpatched Vulnerability : CVE-2026-63923	Nessus	Misc.	Local	high

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CVE-2026-63923

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