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

  - mptcp: reclaim forward-allocated memory on RX path errors After commit 9db5b3cec4ec (mptcp: borrow     forward memory from subflow), errors in the receive path prior to queueing skbs into the receive queue do     not trigger forward-allocated memory reclaiming. Prevent forward memory from growing unboundedly in     pathological drop scenarios by explicitly reclaiming memory when skbs are dropped. (CVE-2026-80588)

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

ID	Name	Product	Family	Published	Updated	Severity
340844	Linux Distros Unpatched Vulnerability : CVE-2026-80588	Nessus	Misc.	8/26/2026	10/19/2026	high
351016	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-3139)	Nessus	Amazon Linux Local Security Checks	9/29/2026	10/8/2026	critical

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critical