cve-2026-23381

About this tag
CVE-2026-23381 is a Linux kernel vulnerability affecting bridge networking when IPv6 is disabled at boot but bridge neighbor suppression remains enabled. The flaw can cause a kernel NULL pointer dereference if an ICMPv6 Neighbor Discovery packet reaches the bridge, leading to a crash via neigh_lookup() and br_do_suppress_nd(). The fix is small, but the issue highlights the importance of consistent kernel configuration. This tag covers discussions and analysis of CVE-2026-23381, including its impact, reproduction, and mitigation strategies for systems running affected Linux kernels.

  1. CVE-2026-23381: Linux Bridge Crash When IPv6 Is Disabled

    Using the uploaded CVE text plus kernel and Microsoft advisory context, I’m drafting the article as a publish-ready feature with no citations or links in the body per your output contract. A newly disclosed Linux kernel flaw, tracked as CVE-2026-23381, exposes a sharp edge in bridge networking...
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    • bridge networking cve-2026-23381 ipv6 disabled linux kernel
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    • Forum: Security Alerts