Fixed
Created: Dec 31, 2025
Updated: Jan 6, 2026
Resolved Date: Jan 1, 2026
Found In Version: 10.21.20.2
Fix Version: 10.21.20.15
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel
In the Linux kernel, the following vulnerability has been resolved:
cifs: Fix the error length of VALIDATE_NEGOTIATE_INFO message
Commit d5c7076b772a ("smb3: add smb3.1.1 to default dialect list")
extend the dialects from 3 to 4, but forget to decrease the extended
length when specific the dialect, then the message length is larger
than expected.
This maybe leak some info through network because not initialize the
message body.
After apply this patch, the VALIDATE_NEGOTIATE_INFO message length is
reduced from 28 bytes to 26 bytes.
