Answer in brief
CVE-2025-21945 records a Unknown severity vulnerability in ksmbd: fix use-after-free in smb2_lock. 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 <410ce35a2ed6d0e114132bba29af49b69880c8c7 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <8573571060ca466cbef2c6f03306b2cc7b883506 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <a0609097fd10d618aed4864038393dd75131289e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <636e021646cf9b52ddfea7c809b018e91f2188cb || >=0626e6641f6b467447c81dd7678a69c66f7746cf <84d2d1641b71dec326e8736a749b7ee76a9599fc | 410ce35a2ed6d0e114132bba29af49b69880c8c7, 8573571060ca466cbef2c6f03306b2cc7b883506, a0609097fd10d618aed4864038393dd75131289e, 636e021646cf9b52ddfea7c809b018e91f2188cb, 84d2d1641b71dec326e8736a749b7ee76a9599fc |
| 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 use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2025-21945 records a Unknown severity vulnerability in ksmbd: fix use-after-free in smb2_lock. 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 <410ce35a2ed6d0e114132bba29af49b69880c8c7 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <8573571060ca466cbef2c6f03306b2cc7b883506 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <a0609097fd10d618aed4864038393dd75131289e || >=0626e6641f6b467447c81dd7678a69c66f7746cf <636e021646cf9b52ddfea7c809b018e91f2188cb || >=0626e6641f6b467447c81dd7678a69c66f7746cf <84d2d1641b71dec326e8736a749b7ee76a9599fc | 410ce35a2ed6d0e114132bba29af49b69880c8c7, 8573571060ca466cbef2c6f03306b2cc7b883506, a0609097fd10d618aed4864038393dd75131289e, 636e021646cf9b52ddfea7c809b018e91f2188cb, 84d2d1641b71dec326e8736a749b7ee76a9599fc |
| 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 use-after-free in smb2_lock If smb_lock->zero_len has value, ->llist of smb_lock is not delete and flock is old one. It will cause use-after-free on error handling routine.
Quoted source text, attributed separately from HOL analysis.