{"cve":"CVE-2025-40200","nvd":{"published":"2025-11-12T22:15:47.160","modified":"2026-10-19T21:10:00.160","status":"Deferred","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nSquashfs: reject negative file sizes in squashfs_read_inode()\n\nSyskaller reports a \"WARNING in ovl_copy_up_file\" in overlayfs.\n\nThis warning is ultimately caused because the underlying Squashfs file\nsystem returns a file with a negative file size.\n\nThis commit checks for a negative file size and returns EINVAL.\n\n[phillip@squashfs.org.uk: only need to check 64 bit quantity]","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/2871c74caa3f4f05b429e6bfefebac62dbf1b408","https://git.kernel.org/stable/c/54170057a5fadd24a37b70de41e61d39284d9bd7","https://git.kernel.org/stable/c/8118f66124895829443d09c207e654adcb2f9321","https://git.kernel.org/stable/c/875fb3f87ae0225b881319ba016a1a8c4ffd5812","https://git.kernel.org/stable/c/8c7aad76751816207fee556d44aa88a710824810"],"products":[],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-40200","score":0.0021,"percentile":0.11057,"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."]}