In the Linux kernel, the following vulnerability has been resolved: octeontx2-pf: avoid double free of pool->stack on AQ init failure otx2_pool_aq_init() frees pool->stack when mailbox sync or retry allocation fails, but leaves the pointer unchanged. Later, otx2_sq_aura_pool_init() unwinds the partial setup through otx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific cn20k_pool_aq_init() implementation has the same bug in its corresponding error path. Set pool->stack to NULL immediately after the local free so the shared cleanup path does not free the same stack again while cleaning up partially initialized pool state. The bug was first flagged by an experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1. The tool is still under development and is not yet publicly available. Manual inspection confirms that the bug is still present in v7.1-rc3. Runtime validation was not performed because reproducing this path requires OcteonTX2/CN20K hardware.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-100519 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    octeontx2-pf: avoid double free of pool->stack on AQ init failure

    otx2_pool_aq_init() frees pool->stack when mailbox sync or retry     allocation fails, but leaves the pointer unchanged. Later,     otx2_sq_aura_pool_init() unwinds the partial setup through     otx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific     cn20k_pool_aq_init() implementation has the same bug in     its corresponding error path.

    Set pool->stack to NULL immediately after the local free so the shared     cleanup path does not free the same stack again while cleaning up     partially initialized pool state.

    The bug was first flagged by an experimental analysis tool we are     developing for kernel memory-management bugs while analyzing     v6.13-rc1. The tool is still under development and is not yet publicly     available. Manual inspection confirms that the bug is still present in     v7.1-rc3.

    Runtime validation was not performed because reproducing this path     requires OcteonTX2/CN20K hardware.

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

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-099709 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    octeontx2-pf: avoid double free of pool->stack on AQ init failure

    otx2_pool_aq_init() frees pool->stack when mailbox sync or retry     allocation fails, but leaves the pointer unchanged. Later,     otx2_sq_aura_pool_init() unwinds the partial setup through     otx2_aura_pool_free(), which frees pool->stack again. The CN20K-specific     cn20k_pool_aq_init() implementation has the same bug in     its corresponding error path.

    Set pool->stack to NULL immediately after the local free so the shared     cleanup path does not free the same stack again while cleaning up     partially initialized pool state.

    The bug was first flagged by an experimental analysis tool we are     developing for kernel memory-management bugs while analyzing     v6.13-rc1. The tool is still under development and is not yet publicly     available. Manual inspection confirms that the bug is still present in     v7.1-rc3.

    Runtime validation was not performed because reproducing this path     requires OcteonTX2/CN20K hardware.

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

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

An update of the linux package has been released.

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

  - octeontx2-pf: avoid double free of pool->stack on AQ init failure otx2_pool_aq_init() frees pool->stack     when mailbox sync or retry allocation fails, but leaves the pointer unchanged. Later,     otx2_sq_aura_pool_init() unwinds the partial setup through otx2_aura_pool_free(), which frees pool->stack     again. The CN20K-specific cn20k_pool_aq_init() implementation has the same bug in its corresponding error     path. Set pool->stack to NULL immediately after the local free so the shared cleanup path does not free     the same stack again while cleaning up partially initialized pool state. The bug was first flagged by an     experimental analysis tool we are developing for kernel memory-management bugs while analyzing v6.13-rc1.
    The tool is still under development and is not yet publicly available. Manual inspection confirms that the     bug is still present in v7.1-rc3. Runtime validation was not performed because reproducing this path     requires OcteonTX2/CN20K hardware. (CVE-2026-64222)

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

ID	Name	Product	Family	Type	Severity
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
336923	Unity Linux 20.1050a Security Update: kernel (UTSA-2026-100519)	Nessus	Unity Linux Local Security Checks	Local	high
336609	Unity Linux 20.1050e Security Update: kernel (UTSA-2026-099709)	Nessus	Unity Linux Local Security Checks	Local	high
333941	Photon OS 5.0: Linux PHSA-2026-5.0-92-0926	Nessus	PhotonOS Local Security Checks	Local	high
333762	Photon OS 5.0: Linux PHSA-2026-5.0-92-0895	Nessus	PhotonOS Local Security Checks	Local	high
330192	Linux Distros Unpatched Vulnerability : CVE-2026-64222	Nessus	Misc.	Local	high
329326	Photon OS 5.0: Linux PHSA-2026-5.0-0926	Nessus	PhotonOS Local Security Checks	Local	high
322944	Photon OS 5.0: Linux PHSA-2026-5.0-0895	Nessus	PhotonOS Local Security Checks	Local	high

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