CVE-2026-23083

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel contains a flaw within the fou module. Specifically, the FOU ATTR IPPROTO attribute should not be set to 0. When FOU ATTR IPPROTO is 0, the skb (socket buffer) is not properly freed by the fou udp recv() function, nor is it re-submitted via ip protocol deliver rcu(). This can lead to resource leaks. The issue exists in the fou udp recv() function.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.