CVE-2026-74601

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

Description A race condition exists in the ring buffer swap cpu() function. The function relies on a per-CPU committing counter to verify if a buffer is being written to before performing a swap. However, during a write operation within the rb move tail() function, the committing counter can temporarily drop to 0. This creates a window where a swap can occur while a write is still in progress, resulting in an inconsistent buffer state and triggering a warning in the rb commit() function.

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