In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the connection can be freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage in both handlers. Keep the existing keypress notification behavior unchanged by routing the early exits through a common unlock path.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27789 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: xen/privcmd: fix double free via VMA splitting (CVE-2026-31787)

    * 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: ALSA: usb-audio: Add sanity check for OOB writes at silencing (CVE-2026-43279)

    * kernel: scsi: qla2xxx: Completely fix fcport double free (CVE-2026-43414)

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

    * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)

    * 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: RDMA/mana: Remove user triggerable WARN_ON() in mana_ib_create_qp_rss() (CVE-2026-46117)

    * kernel: RDMA/mana: Validate rx_hash_key_len (CVE-2026-46145)

    * 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)

    * kernel: nvmet-tcp: fix race between ICReq handling and queue teardown (CVE-2026-46135)

    Bug Fix(es) and Enhancement(s):

    * RHEL9.4 - s390/ap: Expose ap_bindings_complete_count counter via sysfs [rhel-9.8.z] (JIRA:RHEL-166048)

    * [RHEL 9.8] Hung tasks during both suspend and hibernate operations on systems with Intel E810 NICs     [rhel-9.8.z] (JIRA:RHEL-175699)

    * DPLL: Add support for pin operational state [rhel-9.8.z] (JIRA:RHEL-175820)

    * DPLL: Add support for fractional frequency offset between pin and device [rhel-9.8.z] (JIRA:RHEL-175823)

    * ibmveth Adapter Freeze with Small MSS [rhel-9.8.z] (JIRA:RHEL-178308)

    * RHEL9.4 - s390/mm: Add missing secure storage access fixups [rhel-9.8.z] (JIRA:RHEL-183317)

    * rbd: eliminate a race in lock_dwork draining on unmap [rhel-9.8.z] (JIRA:RHEL-183130)

    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 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 remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:26427 advisory.

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

    * 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: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)

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

    * 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)

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 Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-26427 advisory.

    - wifi: mac80211: remove station if connection prep fails (Jose Ignacio Tornos Martinez) [RHEL-180120]     {CVE-2026-46125}
    - wifi: mac80211: drop stray 'static' from fast-RX rx_result (CKI Backport Bot) [RHEL-180058]     {CVE-2026-46152}
    - Bluetooth: hci_event: fix potential UAF in SSP passkey handlers (CKI Backport Bot) [RHEL-179360]     {CVE-2026-46056}
    - netfilter: flowtable: strictly check for maximum number of actions (Florian Westphal) [RHEL-176909]     {CVE-2026-43329}
    - netfilter: nf_tables_offload: add nft_flow_action_entry_next() and use it (Florian Westphal)     [RHEL-176909] {CVE-2026-43329}
    - mptcp: fix slab-use-after-free in __inet_lookup_established (Davide Caratti) [RHEL-171500]     {CVE-2026-31669}
    - xen/privcmd: fix double free via VMA splitting (Vitaly Kuznetsov) [RHEL-172482] {CVE-2026-31787}
    - wifi: brcmfmac: validate bsscfg indices in IF events (CKI Backport Bot) [RHEL-173853] {CVE-2026-43110}

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:26428 advisory.

    * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
      * 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: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)
      * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)
      * 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)

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 AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:26427 advisory.

    * kernel: mptcp: fix slab-use-after-free in __inet_lookup_established (CVE-2026-31669)
      * 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: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)
      * kernel: netfilter: flowtable: strictly check for maximum number of actions (CVE-2026-43329)
      * 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)

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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26428 advisory.

    The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with     extremely high determinism requirements.

    Security Fix(es):

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

    * 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: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)

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

    * 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)

    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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:26427 advisory.

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

    Security Fix(es):

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

    * 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: wifi: brcmfmac: validate bsscfg indices in IF events (CVE-2026-43110)

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

    * 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)

    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.

  - Bluetooth: hci_event: fix potential UAF in SSP passkey handlers hci_conn lookup and field access must be     covered by hdev lock in hci_user_passkey_notify_evt() and hci_keypress_notify_evt(), otherwise the     connection can be freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage in     both handlers. Keep the existing keypress notification behavior unchanged by routing the early exits     through a common unlock path. (CVE-2026-46056)

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

ID	Name	Product	Family	Severity
321964	RHEL 9 : kernel (RHSA-2026:27789)	Nessus	Red Hat Local Security Checks	high
321956	RockyLinux 10 : kernel (RLSA-2026:27288)	Nessus	Rocky Linux Local Security Checks	high
321829	RHEL 10 : kernel (RHSA-2026:27288)	Nessus	Red Hat Local Security Checks	high
321624	RockyLinux 8 : kernel (RLSA-2026:26427)	Nessus	Rocky Linux Local Security Checks	high
321606	Oracle Linux 8 : kernel (ELSA-2026-26427)	Nessus	Oracle Linux Local Security Checks	high
321501	AlmaLinux 8 : kernel-rt (ALSA-2026:26428)	Nessus	Alma Linux Local Security Checks	high
321500	AlmaLinux 8 : kernel (ALSA-2026:26427)	Nessus	Alma Linux Local Security Checks	high
321269	RHEL 8 : kernel-rt (RHSA-2026:26428)	Nessus	Red Hat Local Security Checks	high
321251	RHEL 8 : kernel (RHSA-2026:26427)	Nessus	Red Hat Local Security Checks	high
317230	Linux Distros Unpatched Vulnerability : CVE-2026-46056	Nessus	Misc.	high

Detections

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CVE-2026-46056

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