CVE-2025-68786 (GCVE-0-2025-68786)
Vulnerability from cvelistv5 – Published: 2026-01-13 15:28 – Updated: 2026-01-13 15:28
VLAI?
Title
ksmbd: skip lock-range check on equal size to avoid size==0 underflow
Summary
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Linux | Linux |
Affected:
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 52fcbb92e0d3acfd1448b2a43b6595d540da5295
(git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < da29cd197246c85c0473259f1cad897d9d28faea (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a6f4cfa3783804336491e0edcb250c25f9b59d33 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 571204e4758a528fbd67330bd4b0dfbdafb33dd8 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 5d510ac31626ed157d2182149559430350cf2104 (git) |
||
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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