CVE-2026-45955
published 2026-05-27CVE-2026-45955: In the Linux kernel, the following vulnerability has been resolved: md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout When…
medium5.5
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
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 5ab829f1971dc99f2aac10846c378e67fc875abc < 095417d6b669c2dec39a5842ccb94df915f97f54 | 095417d6b669c2dec39a5842ccb94df915f97f54 |
| linux | linux | >= 5ab829f1971dc99f2aac10846c378e67fc875abc < 2446d099350185caeed19ab2c0270451a97296fb | 2446d099350185caeed19ab2c0270451a97296fb |
| linux | linux | >= 5ab829f1971dc99f2aac10846c378e67fc875abc < d119bd2e1643cc023210ff3c6f0657e4f914e71d | d119bd2e1643cc023210ff3c6f0657e4f914e71d |
| linux | linux_kernel | — | — |