CVE-2026-45955
md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
6th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 27, 2026 |
| Last Updated | Jun 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
5ab829f1971dc99f2aac10846c378e67fc875abc < 095417d6b669c2dec39a5842ccb94df915f97f54 5ab829f1971dc99f2aac10846c378e67fc875abc < 2446d099350185caeed19ab2c0270451a97296fb 5ab829f1971dc99f2aac10846c378e67fc875abc < d119bd2e1643cc023210ff3c6f0657e4f914e71d
Linux / Linux
6.18