timer lifecycle bug

  1. CVE-2026-23274: xt_IDLETIMER Timer-Label Reuse Can Trigger Kernel Panic

    Linux kernel CVE-2026-23274 is a small-looking bug with a very specific failure mode, but it sits in exactly the kind of kernel plumbing that can turn a bookkeeping mistake into a crash. The issue is in the netfilter xt_IDLETIMER path: revision 0 rules can reuse an existing timer object by...
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    • kernel panic on warn linux kernel security netfilter xt_idletimer timer lifecycle bug
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    • Forum: Security Alerts