packet socket fanout

About this tag
The packet socket fanout tag on WindowsForum.com covers Linux kernel security issues related to the packet socket fanout mechanism. Recent content discusses CVE-2026-31504, a use-after-free vulnerability caused by a NETDEV_UP race condition that can re-register a socket into a fanout group during teardown, leaving a dangling pointer. The tag focuses on kernel networking bugs, race conditions, and upstream fixes. Topics include packet socket fanout internals, reference counting, and security patches. This tag is relevant for Linux system administrators, kernel developers, and security researchers tracking network-stack vulnerabilities.

  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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    • Forum: Security Alerts