CVE-2025-68786 — ksmbd: skip lock-range check on equal size to avoid size==0 underflow
In the Linux kernel, the following vulnerability has been resolved: ksmbd: skip lock-range check on equal size to avoid size==0 underflow When size equals the current i_size (…
Published: 2026-01-13 · CVSS: Unscored
In the Linux kernel, the following vulnerability has been resolved: ksmbd: skip lock-range check on equal size to avoid size==0 underflow When size equals the current i_size (including 0), the code used to call check_lock_range(filp, i_size, size - 1, WRITE), which computes `size - 1` and can underflow for size==0. Skip the equal case.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7