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

  - ipv6: fix possible infinite loop in fib6_select_path() Found while auditing the same pattern Sashiko     reported in rt6_fill_node() [1]. Apply the same fix as commit f8d8ce1b515a (ipv6: fix possible infinite     loop in fib6_info_uses_dev()). Writers holding tb6_lock can list_del_rcu(&first->fib6_siblings) without     waiting for RCU readers; first->fib6_siblings.next then still points into the old ring and this softirq-     side walker never reaches &first->fib6_siblings as its terminator. fib6_purge_rt() always WRITE_ONCE()s     first->fib6_nsiblings to 0 before list_del_rcu(), so an inside-loop check is a reliable detach signal. [1]     https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev (CVE-2026-63968)

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
328068	Linux Distros Unpatched Vulnerability : CVE-2026-63968	Nessus	Misc.	7/20/2026	7/29/2026	high
329326	Photon OS 5.0: Linux PHSA-2026-5.0-0926	Nessus	PhotonOS Local Security Checks	7/24/2026	7/28/2026	high
322087	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1881)	Nessus	Amazon Linux Local Security Checks	6/22/2026	7/31/2026	medium
322944	Photon OS 5.0: Linux PHSA-2026-5.0-0895	Nessus	PhotonOS Local Security Checks	6/26/2026	8/1/2026	high
327380	Amazon Linux 2023 : bpftool, kernel, kernel-devel (ALAS2023-2026-1924)	Nessus	Amazon Linux Local Security Checks	7/16/2026	7/31/2026	medium
328493	Amazon Linux 2023 : bpftool6.12, kernel6.12, kernel6.12-devel (ALAS2023-2026-1968)	Nessus	Amazon Linux Local Security Checks	7/20/2026	7/31/2026	high

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