Description
In the Linux kernel, the following vulnerability has been resolved:
ksmbd: fix buffer validation by including null terminator size in EA length
The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NAffected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= d070c4dd2a5bed4e9832eec5b6c029c7d14892ea, < cae52c592a07e1d3fa3338a5f064a374a5f26750; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < a28a375a5439eb474e9f284509a407efb479c925; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < d26af6d14da43ab92d07bc60437c62901dc522e6; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < 6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4; >= 0ba5439d9afa2722e7728df56f272c89987540a4, < 95d7a890e4b03e198836d49d699408fd1867cb55; bb5bf157b5be1643cccc7cbbe57fcdef9ae52c2c; 1a13ecb96230e8b7b91967e292836f7b01ec8111; 404e7c01e16288b5e0171d1d8fd3328e806d0794; >= 6.1.52, < 6.1.160; >= 5.15.131, < 5.16; >= 6.4.15, < 6.5; >= 6.5.2, < 6.6 |
| Linux | Linux | 6.6 |
References
- https://git.kernel.org/stable/c/6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4
- https://git.kernel.org/stable/c/95d7a890e4b03e198836d49d699408fd1867cb55
- https://git.kernel.org/stable/c/a28a375a5439eb474e9f284509a407efb479c925
- https://git.kernel.org/stable/c/cae52c592a07e1d3fa3338a5f064a374a5f26750
- https://git.kernel.org/stable/c/d26af6d14da43ab92d07bc60437c62901dc522e6
Timeline
- Published
- Jan 13, 2026
- Last modified
- Jul 30, 2026
- NVD status
- Deferred