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

  - net: shaper: protect late read accesses to the hierarchy We look up a netdev during prep of Netlink ops     (pre- callbacks) and take a ref to it. Then later in the body of the callback we take its lock or RCU     which are the actual protections. This is not proper, a conversion from a ref to a locked netdev must     include a liveness check (a check if the netdev hasn't been unregistered already). Fix the read cases     (those under RCU). Writes needs a separate change to protect from creating the hierarchy after flush has     already run. (CVE-2026-23437)

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

ID	Name	Product	Family	Published	Updated	Severity
318102	openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20826-1)	Nessus	SuSE Local Security Checks	6/1/2026	6/2/2026	high
304910	Linux Distros Unpatched Vulnerability : CVE-2026-23437	Nessus	Misc.	4/5/2026	7/31/2026	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
318240	SUSE SLES16 Security Update : kernel (SUSE-SU-2026:21860-1)	Nessus	SuSE Local Security Checks	6/2/2026	6/9/2026	high
319659	SUSE SLES16 Security Update : kernel (SUSE-SU-2026:21845-1)	Nessus	SuSE Local Security Checks	6/8/2026	6/9/2026	high

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