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Expired Pointer Dereference The advisory has been revoked - it doesn't affect any version of package perf  (opens in a new tab)

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  • Snyk IDSNYK-RHEL10-PERF-15779947
  • published26 Mar 2026
  • disclosed25 Mar 2026
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Introduced: 25 Mar 2026

CVE-2026-23392  (opens in a new tab)
CWE-825  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by RHEL.

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: release flowtable after rcu grace period on error

Call synchronize_rcu() after unregistering the hooks from error path, since a hook that already refers to this flowtable can be already registered, exposing this flowtable to packet path and nfnetlink_hook control plane.

This error path is rare, it should only happen by reaching the maximum number hooks or by failing to set up to hardware offload, just call synchronize_rcu().

There is a check for already used device hooks by different flowtable that could result in EEXIST at this late stage. The hook parser can be updated to perform this check earlier to this error path really becomes rarely exercised.

Uncovered by KASAN reported as use-after-free from nfnetlink_hook path when dumping hooks.