cve-2026-31504

About this tag
CVE-2026-31504 is a Linux kernel vulnerability involving a use-after-free race condition in the packet socket fanout path. The issue arises when a NETDEV_UP event re-registers a socket into a fanout group after packet_release() has begun tearing it down, leaving a dangling pointer in the fanout array. The upstream fix is narrow, closing the race without broader changes. On WindowsForum.com, discussions focus on understanding the technical details of this Linux CVE, its implications for network stack security, and the kernel fix approach. The tag is relevant for users tracking cross-platform security issues and kernel-level race conditions.

  1. Linux CVE-2026-31504 Fix: Packet Socket Fanout Use-After-Free Race Explained

    Linux has published another network-stack security fix that underscores how small lifetime bugs can become serious kernel problems. In CVE-2026-31504, the issue is a use-after-free risk in the packet socket fanout path, where a NETDEV_UP race can re-register a socket into a fanout group after...
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    • cve-2026-31504 linux kernel security packet socket fanout use-after-free race
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