Answer in brief
CVE-2025-21966 records a Unknown severity vulnerability in dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature. 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1d9a943898533e83f20370c0e1448d606627522e <818330f756f3800c37d738bd36bce60eac949938 || >=1d9a943898533e83f20370c0e1448d606627522e <5a87e46da2418c57b445371f5ca0958d5779ba5f || >=1d9a943898533e83f20370c0e1448d606627522e <da070843e153471be4297a12fdaa64023276f40e || >=1d9a943898533e83f20370c0e1448d606627522e <57e9417f69839cb10f7ffca684c38acd28ceb57b | 818330f756f3800c37d738bd36bce60eac949938, 5a87e46da2418c57b445371f5ca0958d5779ba5f, da070843e153471be4297a12fdaa64023276f40e, 57e9417f69839cb10f7ffca684c38acd28ceb57b |
| Linux/Linuxgeneric | 6.5 | Not reported |
Published upstream
Apr 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature Fix memory corruption due to incorrect parameter being passed to bio_init
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-21966 records a Unknown severity vulnerability in dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature. 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.
A CVSS score is not reported in the current record. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1d9a943898533e83f20370c0e1448d606627522e <818330f756f3800c37d738bd36bce60eac949938 || >=1d9a943898533e83f20370c0e1448d606627522e <5a87e46da2418c57b445371f5ca0958d5779ba5f || >=1d9a943898533e83f20370c0e1448d606627522e <da070843e153471be4297a12fdaa64023276f40e || >=1d9a943898533e83f20370c0e1448d606627522e <57e9417f69839cb10f7ffca684c38acd28ceb57b | 818330f756f3800c37d738bd36bce60eac949938, 5a87e46da2418c57b445371f5ca0958d5779ba5f, da070843e153471be4297a12fdaa64023276f40e, 57e9417f69839cb10f7ffca684c38acd28ceb57b |
| Linux/Linuxgeneric | 6.5 | Not reported |
Published upstream
Apr 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 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: dm-flakey: Fix memory corruption in optional corrupt_bio_byte feature Fix memory corruption due to incorrect parameter being passed to bio_init
Quoted source text, attributed separately from HOL analysis.