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

  - btrfs: add missing RCU unlock in error path in try_release_subpage_extent_buffer() Call rcu_read_lock()     before exiting the loop in try_release_subpage_extent_buffer() because there is a rcu_read_unlock() call     past the loop. This has been detected by the Clang thread-safety analyzer. (CVE-2026-43358)

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

ID	Name	Product	Family	Published	Updated	Severity
315704	Linux Distros Unpatched Vulnerability : CVE-2026-43358	Nessus	Misc.	5/20/2026	8/27/2026	medium
311340	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1596)	Nessus	Amazon Linux Local Security Checks	4/30/2026	6/17/2026	high

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