Answer in brief
CVE-2026-45955 records a High severity (CVSS 7.1) vulnerability in md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | 6.18 | Not reported |
| Linux/Linuxgeneric | >=5ab829f1971dc99f2aac10846c378e67fc875abc <095417d6b669c2dec39a5842ccb94df915f97f54 || >=5ab829f1971dc99f2aac10846c378e67fc875abc <2446d099350185caeed19ab2c0270451a97296fb || >=5ab829f1971dc99f2aac10846c378e67fc875abc <d119bd2e1643cc023210ff3c6f0657e4f914e71d | 095417d6b669c2dec39a5842ccb94df915f97f54, 2446d099350185caeed19ab2c0270451a97296fb, d119bd2e1643cc023210ff3c6f0657e4f914e71d |
Published upstream
May 27, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
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.
Quoted source text, attributed separately from HOL analysis.