CVE-2026-64017

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

Description A use-after-free bug exists in the blk-mq component when submitting a bio. The issue occurs if a task sleeps after peeking at a cached request but before popping it, causing the plug to flush and call blk mq free plug rqs(), which frees the cached rqs. This can be resolved by popping the cached request before any blocking calls if it is suitable for use.

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