Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15, < 6.1.139 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/04c8a38c60346bb5a7c49b276de7233f703ce9cbPatch
- https://git.kernel.org/stable/c/0ca6df4f40cf4c32487944aaf48319cb6c25acccPatch
- https://git.kernel.org/stable/c/7f61da79df86fd140c7768e668ad846bfa7ec8e1Patch
- https://git.kernel.org/stable/c/d62ba16563a86aae052f96d270b3b6f78fca154cPatch
- https://git.kernel.org/stable/c/e6356499fd216ed6343ae0363f4c9303f02c5034Patch
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.htmlThird Party AdvisoryMailing List
- https://github.com/doyensec/KSMBD-CVE-2025-37947/blob/main/CVE-2025-37947.cThird Party AdvisoryMailing List
FAQ
What is CVE-2025-37947?
CVE-2025-37947 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 (...
How severe is CVE-2025-37947?
CVE-2025-37947 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-37947?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.