{"cve":"CVE-2025-68786","nvd":{"published":"2026-01-13T16:15:58.357","modified":"2026-06-17T09:59:35.243","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: skip lock-range check on equal size to avoid size==0 underflow\n\nWhen size equals the current i_size (including 0), the code used to call\ncheck_lock_range(filp, i_size, size - 1, WRITE), which computes `size - 1`\nand can underflow for size==0. Skip the equal case.","cvss_v4":null,"cvss_v3":null,"cwes":[],"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"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:19:41.481987139+00:00"},"epss":{"cve":"CVE-2025-68786","score":0.00202,"percentile":0.10129,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}