{"cve":"CVE-2025-39800","nvd":{"published":"2025-09-15T13:15:35.467","modified":"2026-10-19T21:10:00.160","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: abort transaction on unexpected eb generation at btrfs_copy_root()\n\nIf we find an unexpected generation for the extent buffer we are cloning\nat btrfs_copy_root(), we just WARN_ON() and don't error out and abort the\ntransaction, meaning we allow to persist metadata with an unexpected\ngeneration. Instead of warning only, abort the transaction and return\n-EUCLEAN.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":[],"references":["https://git.kernel.org/stable/c/33e8f24b52d2796b8cfb28c19a1a7dd6476323a8","https://git.kernel.org/stable/c/4290e34fb87ae556b12c216efd0ae91583446b7a","https://git.kernel.org/stable/c/4734255ef39b416864139dcda96a387fe5f33a6a","https://git.kernel.org/stable/c/da2124719f386b6e5d4d4b1a2e67c440e4d5892f","https://git.kernel.org/stable/c/f4f5bd9251a4cbe55aaa05725c6c3c32ad1f74b3"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-21T03:43:09.190223697+00:00"},"epss":{"cve":"CVE-2025-39800","score":0.00158,"percentile":0.04912,"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."]}