CVE-2026-45955

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

Description An issue exists in the md/md-llbitmap component where the llbitmap suspend timeout() function returns -ETIMEDOUT upon timing out while waiting for percpu ref to reach zero, without resurrecting the percpu ref. Consequently, the caller function md llbitmap daemon fn() proceeds to the next page without executing llbitmap resume(), which leaves the percpu ref in a permanently killed state. This prevents the page control structure from being usable for subsequent operations.

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