Vulnerability Description
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.
References
- https://git.kernel.org/stable/c/52fcbb92e0d3acfd1448b2a43b6595d540da5295
- https://git.kernel.org/stable/c/571204e4758a528fbd67330bd4b0dfbdafb33dd8
- https://git.kernel.org/stable/c/5d510ac31626ed157d2182149559430350cf2104
- https://git.kernel.org/stable/c/a6f4cfa3783804336491e0edcb250c25f9b59d33
- https://git.kernel.org/stable/c/da29cd197246c85c0473259f1cad897d9d28faea
FAQ
What is CVE-2025-68786?
CVE-2025-68786 is a documented vulnerability. 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 ...
How severe is CVE-2025-68786?
CVSS scoring is not yet available for CVE-2025-68786. Check NVD for updates.
Is there a patch for CVE-2025-68786?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.