CVE-2026-45955

Description

In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout When llbitmap_suspend_timeout() times out waiting for percpu_ref to become zero, it returns -ETIMEDOUT without resurrecting the percpu_ref. The caller (md_llbitmap_daemon_fn) then continues to the next page without calling llbitmap_resume(), leaving the percpu_ref in a killed state permanently. Fix this by resurrecting the percpu_ref before returning the error, ensuring the page control structure remains usable for subsequent operations.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54 ↗
• https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb ↗
• https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d ↗