CVE-2026-74662

Description

In the Linux kernel, the following vulnerability has been resolved: inet: frags: publish queues before arming timer inet_frag_create() arms the fragment queue timer before inserting the queue into the fqdir rhashtable. If the namespace fragment timeout is zero or negative, the timer can run before the queue is published. The timer callback then marks the queue complete, tries to remove a node that is not in the hash table yet, and drops the anticipated hash reference. Creation can subsequently publish the completed queue without restoring that reference, leaving a stale hash node after the caller drops the remaining reference. Publish the queue first and arm the timer while holding the queue lock. This makes timer expiry wait until the queue is visible in the hash table, so inet_frag_kill() can remove the node and balance the hash reference.

CVSS 3.1 breakdown

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

• https://git.kernel.org/stable/c/08a04d7bfb9c103432561aff8a62b6872e694a6a
• https://git.kernel.org/stable/c/39c6c4b267b65f00e0b0335a2ae00cbe9e3174f0
• https://git.kernel.org/stable/c/4ed0681dc2c1e0538b79d2fc56190ffcb369dacd
• https://git.kernel.org/stable/c/653d7ddf6cba867777a3d14c4f83ace008c5ad13
• https://git.kernel.org/stable/c/928128865e43b197e30688dc1bc991592c97edcf
• https://git.kernel.org/stable/c/9f904dd3e455750e5d4ec9b2f134835811b85a2f
• https://git.kernel.org/stable/c/d3ffb89b2944672cf7bdd8e9ee577d2043b4a956
• https://git.kernel.org/stable/c/f4e4dab62181b7fe7c011bed6fbef9fc3d48c769

Frequently asked