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

  - net: l2tp: do not propagate multicast notification errors The tunnel create, tunnel modify, session     create, and session modify netlink handlers send multicast notifications through helpers that can fail     while allocating or encoding a message, or while multicasting it. For tunnel and session create/modify, a     notification is sent after the live operation has completed. Returning a best-effort notification error as     the command result can therefore report failure for an operation that already committed and can cause     callers to retry and accumulate live objects. Keep sending notifications for listener visibility, but do     not propagate their best-effort status as the command result. This also keeps the tunnel modify command     consistent with the other notification-only paths. (CVE-2026-80996)

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

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Linux Distros Unpatched Vulnerability : CVE-2026-80996

medium Nessus Plugin ID 345431

Version 1.7