Answer in brief
CVE-2025-39943 records a Unknown severity vulnerability in ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer. 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.
Answer in brief
CVE-2025-39943 records a Unknown severity vulnerability in ksmbd: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer. 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 | >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <773fddf976d282ef059c36c575ddb81567acd6bc || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <bdaab5c6538e250a9654127e688ecbbeb6f771d5 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <eb0378dde086363046ed3d7db7f126fc3f76fd70 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <8be498fcbd5b07272f560b45981d4b9e5a2ad885 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <529b121b00a6ee3c88fb3c01b443b2b81f686d48 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <5282491fc49d5614ac6ddcd012e5743eecb6a67c | 773fddf976d282ef059c36c575ddb81567acd6bc, bdaab5c6538e250a9654127e688ecbbeb6f771d5, eb0378dde086363046ed3d7db7f126fc3f76fd70, 8be498fcbd5b07272f560b45981d4b9e5a2ad885, 529b121b00a6ee3c88fb3c01b443b2b81f686d48, 5282491fc49d5614ac6ddcd012e5743eecb6a67c |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Oct 4, 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: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.
Quoted source text, attributed separately from HOL analysis.
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 | >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <773fddf976d282ef059c36c575ddb81567acd6bc || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <bdaab5c6538e250a9654127e688ecbbeb6f771d5 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <eb0378dde086363046ed3d7db7f126fc3f76fd70 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <8be498fcbd5b07272f560b45981d4b9e5a2ad885 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <529b121b00a6ee3c88fb3c01b443b2b81f686d48 || >=2ea086e35c3d726a3bacd0a971c1f02a50e98206 <5282491fc49d5614ac6ddcd012e5743eecb6a67c | 773fddf976d282ef059c36c575ddb81567acd6bc, bdaab5c6538e250a9654127e688ecbbeb6f771d5, eb0378dde086363046ed3d7db7f126fc3f76fd70, 8be498fcbd5b07272f560b45981d4b9e5a2ad885, 529b121b00a6ee3c88fb3c01b443b2b81f686d48, 5282491fc49d5614ac6ddcd012e5743eecb6a67c |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Oct 4, 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: smbdirect: validate data_offset and data_length field of smb_direct_data_transfer If data_offset and data_length of smb_direct_data_transfer struct are invalid, out of bounds issue could happen. This patch validate data_offset and data_length field in recv_done.
Quoted source text, attributed separately from HOL analysis.