Answer in brief
CVE-2025-37947 records a High severity (CVSS 8.8) vulnerability in ksmbd: prevent out-of-bounds stream writes by validating *pos. 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.
CVSS is 8.8. 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 <7f61da79df86fd140c7768e668ad846bfa7ec8e1 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <04c8a38c60346bb5a7c49b276de7233f703ce9cb || >=0626e6641f6b467447c81dd7678a69c66f7746cf <d62ba16563a86aae052f96d270b3b6f78fca154c || >=0626e6641f6b467447c81dd7678a69c66f7746cf <e6356499fd216ed6343ae0363f4c9303f02c5034 || >=0626e6641f6b467447c81dd7678a69c66f7746cf <0ca6df4f40cf4c32487944aaf48319cb6c25accc | 7f61da79df86fd140c7768e668ad846bfa7ec8e1, 04c8a38c60346bb5a7c49b276de7233f703ce9cb, d62ba16563a86aae052f96d270b3b6f78fca154c, e6356499fd216ed6343ae0363f4c9303f02c5034, 0ca6df4f40cf4c32487944aaf48319cb6c25accc |
| Linux/Linuxgeneric | 5.15 | Not reported |
Published upstream
May 20, 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: prevent out-of-bounds stream writes by validating *pos ksmbd_vfs_stream_write() did not validate whether the write offset (*pos) was within the bounds of the existing stream data length (v_len). If *pos was greater than or equal to v_len, this could lead to an out-of-bounds memory write. This patch adds a check to ensure *pos is less than v_len before proceeding. If the condition fails, -EINVAL is returned.
Quoted source text, attributed separately from HOL analysis.