{"cve":"CVE-2025-40179","nvd":{"published":"2025-11-12T22:15:44.613","modified":"2026-10-19T21:10:00.160","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\next4: verify orphan file size is not too big\n\nIn principle orphan file can be arbitrarily large. However orphan replay\nneeds to traverse it all and we also pin all its buffers in memory. Thus\nfilesystems with absurdly large orphan files can lead to big amounts of\nmemory consumed. Limit orphan file size to a sane value and also use\nkvmalloc() for allocating array of block descriptor structures to avoid\nlarge order allocations for sane but large orphan files.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/0a6ce20c156442a4ce2a404747bb0fb05d54eeb3","https://git.kernel.org/stable/c/2b9da798ff0f4d026c5f0f815047393ebe7d8859","https://git.kernel.org/stable/c/304fc34ff6fc8261138fd81f119e024ac3a129e9","https://git.kernel.org/stable/c/566a1d6084563bd07433025aa23bcea4427de107","https://git.kernel.org/stable/c/95a21611b14ae0a401720645245a8db16f040995"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-40179","score":0.00222,"percentile":0.12605,"date":"2026-10-25"},"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."]}