Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5ab829f1971dc99f2aac10846c378e67fc875abc before 095417d6b669c2dec39a5842ccb94df915f97f54; affected 5ab829f1971dc99f2aac10846c378e67fc875abc before 2446d099350185caeed19ab2c0270451a97296fb; affected 5ab829f1971dc99f2aac10846c378e67fc875abc before d119bd2e1643cc023210ff3c6f0657e4f914e71d |
| Linux / Linux | affected 6.18; unaffected 0 before 6.18; unaffected 6.18.14 through 6.18.*; unaffected 6.19.4 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/095417d6b669c2dec39a5842ccb94df915f97f54
- https://git.kernel.org/stable/c/2446d099350185caeed19ab2c0270451a97296fb
- https://git.kernel.org/stable/c/d119bd2e1643cc023210ff3c6f0657e4f914e71d
ADP enrichment
No English description supplied.
No references supplied.