CVE-2025-68786

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A flaw exists in the Linux kernel’s ksmbd module where a size underflow can occur during a lock-range check when the size equals the current file size, including zero. This happens because the code calculates size - 1, which can underflow if size is zero. The issue is addressed by skipping the equal size case.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.