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

  - netfilter: xt_CT: drop pending enqueued packets on template removal Templates refer to objects that can go     away while packets are sitting in nfqueue refer to: - helper, this can be an issue on module removal. -     timeout policy, nfnetlink_cttimeout might remove it. The use of templates with zone and event cache filter     are safe, since this just copies values. Flush these enqueued packets in case the template rule gets     removed. (CVE-2026-23391)

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

An update of the linux package has been released.

ID	Name	Product	Family	Published	Updated	Severity
303612	Linux Distros Unpatched Vulnerability : CVE-2026-23391	Nessus	Misc.	3/25/2026	4/6/2026	high
306005	Photon OS 5.0: Linux PHSA-2026-5.0-0813	Nessus	PhotonOS Local Security Checks	4/11/2026	4/11/2026	high
310098	Photon OS 4.0: Linux PHSA-2026-4.0-1002	Nessus	PhotonOS Local Security Checks	4/24/2026	4/24/2026	high

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