Answer in brief
CVE-2025-21946 records a Unknown severity vulnerability in ksmbd: fix out-of-bounds in parse_sec_desc(). 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 | >=0626e6641f6b467447c81dd7678a69c66f7746cf <f4ee19528664777af8b842f8f001be98345aa973 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <c1569dbbe2d43041be9f3fef7ca08bec3b66ad1b || >=0626e6641f6b467447c81dd7678a69c66f7746cf <159d059cbcb0e6d0e7a7b34af3862ba09a6b22d1 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <6a9831180d0b23b5c97e2bd841aefc8f82900172 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <d6e13e19063db24f94b690159d0633aaf72a0f03 | f4ee19528664777af8b842f8f001be98345aa973, c1569dbbe2d43041be9f3fef7ca08bec3b66ad1b, 159d059cbcb0e6d0e7a7b34af3862ba09a6b22d1, 6a9831180d0b23b5c97e2bd841aefc8f82900172, d6e13e19063db24f94b690159d0633aaf72a0f03 |
| Linux/Linuxgeneric | 5.15 | 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: ksmbd: fix out-of-bounds in parse_sec_desc() If osidoffset, gsidoffset and dacloffset could be greater than smb_ntsd struct size. If it is smaller, It could cause slab-out-of-bounds. And when validating sid, It need to check it included subauth array size.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-21946 records a Unknown severity vulnerability in ksmbd: fix out-of-bounds in parse_sec_desc(). 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 | >=0626e6641f6b467447c81dd7678a69c66f7746cf <f4ee19528664777af8b842f8f001be98345aa973 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <c1569dbbe2d43041be9f3fef7ca08bec3b66ad1b || >=0626e6641f6b467447c81dd7678a69c66f7746cf <159d059cbcb0e6d0e7a7b34af3862ba09a6b22d1 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <6a9831180d0b23b5c97e2bd841aefc8f82900172 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <d6e13e19063db24f94b690159d0633aaf72a0f03 | f4ee19528664777af8b842f8f001be98345aa973, c1569dbbe2d43041be9f3fef7ca08bec3b66ad1b, 159d059cbcb0e6d0e7a7b34af3862ba09a6b22d1, 6a9831180d0b23b5c97e2bd841aefc8f82900172, d6e13e19063db24f94b690159d0633aaf72a0f03 |
| Linux/Linuxgeneric | 5.15 | 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: ksmbd: fix out-of-bounds in parse_sec_desc() If osidoffset, gsidoffset and dacloffset could be greater than smb_ntsd struct size. If it is smaller, It could cause slab-out-of-bounds. And when validating sid, It need to check it included subauth array size.
Quoted source text, attributed separately from HOL analysis.