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

  - bpf: Fix exception exit lock checking for subprogs process_bpf_exit_full() passes check_lock = !curframe     to check_resource_leak(), which is false in cases when bpf_throw() is called from a static subprog. This     makes check_resource_leak() to skip validation of active_rcu_locks, active_preempt_locks, and     active_irq_id on exception exits from subprogs. At runtime bpf_throw() unwinds the stack via ORC without     releasing any user-acquired locks, which may cause various issues as the result. Fix by setting check_lock     = true for exception exits regardless of curframe, since exceptions bypass all intermediate frame cleanup.
    Update the error message prefix to bpf_throw for exception exits to distinguish them from normal     BPF_EXIT. Fix reject_subprog_with_rcu_read_lock test which was previously passing for the wrong reason.
    Test program returned directly from the subprog call without closing the RCU section, so the error was     triggered by the unclosed RCU lock on normal exit, not by bpf_throw. Update __msg annotations for affected     tests to match the new bpf_throw error prefix. The spin_lock case is not affected because they are     already checked [1] at the call site in do_check_insn() before bpf_throw can run. [1] https://git.kernel.o     rg/pub/scm/linux/kernel/git/torvalds/linux.git/tree/kernel/bpf/verifier.c?h=v7.0-rc4#n21098     (CVE-2026-31526)

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

ID	Name	Product	Family	Published	Updated	Severity
309848	Linux Distros Unpatched Vulnerability : CVE-2026-31526	Nessus	Misc.	4/22/2026	10/12/2026	medium
316948	Amazon Linux 2023 : bpftool6.18, kernel6.18, kernel6.18-devel (ALAS2023-2026-1746)	Nessus	Amazon Linux Local Security Checks	5/27/2026	7/16/2026	high
318240	SUSE SLES16 Security Update : kernel (SUSE-SU-2026:21860-1)	Nessus	SuSE Local Security Checks	6/2/2026	9/18/2026	high
319659	SUSE SLES16 Security Update : kernel (SUSE-SU-2026:21845-1)	Nessus	SuSE Local Security Checks	6/8/2026	10/13/2026	high
318102	openSUSE 16 Security Update : kernel (openSUSE-SU-2026:20826-1)	Nessus	SuSE Local Security Checks	6/1/2026	9/18/2026	high

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