{"cve":"CVE-2025-40051","nvd":{"published":"2025-10-28T12:15:39.273","modified":"2026-10-19T21:10:00.160","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nvhost: vringh: Modify the return value check\n\nThe return value of copy_from_iter and copy_to_iter can't be negative,\ncheck whether the copied lengths are equal.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/78dc7362662fedaa1928fb8e4f27401c8322905d","https://git.kernel.org/stable/c/82a8d0fda55b35361ee7f35b54fa2b66d7847d2b","https://git.kernel.org/stable/c/baa37b1c7e29546f79c39bef0d18c4edc9f39bb1","https://git.kernel.org/stable/c/cfa0654402c06d086201a9ff167eb95da5844fc3","https://git.kernel.org/stable/c/db042925a5ab7a550b710addeadbf6f72e3a8a4b"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-40051","score":0.00165,"percentile":0.05703,"date":"2026-10-26"},"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."]}