CVE-2026-74521
In the Linux kernel, the following vulnerability has been resolved: ksmbd: use memcmp() to compare ClientGUIDs ClientGUID is a fixed-size binary value and can …
Impact
In the Linux kernel, the following vulnerability has been resolved: ksmbd: use memcmp() to compare ClientGUIDs ClientGUID is a fixed-size binary value and can contain embedded NUL bytes. strncmp() stops comparing at the first NUL byte, so different ClientGUID values can incorrectly be treated as equal. Use memcmp() in SMB3 multichannel session binding and FSCTL_VALIDATE_NEGOTIATE_INFO to compare all SMB2_CLIENT_GUID_SIZE bytes.
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/5a0367bf5ce420be7b19936def2e90adcf32a683
- https://git.kernel.org/stable/c/7bde6f181fa307d2cc1ec2b0313ac8e9811c8232
- https://git.kernel.org/stable/c/a386c83043015a703e227775f778e40343f45911
- https://git.kernel.org/stable/c/ba2a5b66f1d414eb8403d655f8813783892cfc85
- https://git.kernel.org/stable/c/d535363299822c5caa543787b21bd5cfa3e41949
- https://git.kernel.org/stable/c/e8bb506e6ef749ac0336f3e579d8d02396b7d832