Answer in brief
CVE-2025-22039 records a Unknown severity vulnerability in ksmbd: fix overflow in dacloffset bounds check. 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 <6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc || >=0626e6641f6b467447c81dd7678a69c66f7746cf <6b8d379048b168a0dff5ab1acb975b933f368514 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <443b373a4df5a2cb9f7b8c4658b2afedeb16397f || >=0626e6641f6b467447c81dd7678a69c66f7746cf <beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42 | 6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc, 6b8d379048b168a0dff5ab1acb975b933f368514, 443b373a4df5a2cb9f7b8c4658b2afedeb16397f, beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Apr 16, 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 overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access to the DACL.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-22039 records a Unknown severity vulnerability in ksmbd: fix overflow in dacloffset bounds check. 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 <6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc || >=0626e6641f6b467447c81dd7678a69c66f7746cf <6b8d379048b168a0dff5ab1acb975b933f368514 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <443b373a4df5a2cb9f7b8c4658b2afedeb16397f || >=0626e6641f6b467447c81dd7678a69c66f7746cf <beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42 | 6a9cd9ff0fa2bcc30b2bfb8bdb161eb20e44b9dc, 6b8d379048b168a0dff5ab1acb975b933f368514, 443b373a4df5a2cb9f7b8c4658b2afedeb16397f, beff0bc9d69bc8e733f9bca28e2d3df5b3e10e42 |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
Apr 16, 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 overflow in dacloffset bounds check The dacloffset field was originally typed as int and used in an unchecked addition, which could overflow and bypass the existing bounds check in both smb_check_perm_dacl() and smb_inherit_dacl(). This could result in out-of-bounds memory access and a kernel crash when dereferencing the DACL pointer. This patch converts dacloffset to unsigned int and uses check_add_overflow() to validate access to the DACL.
Quoted source text, attributed separately from HOL analysis.