{"id":"CVE-2025-30258","details":"In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a \"verification DoS.\"","modified":"2026-04-16T04:40:32.283137769Z","published":"2025-03-19T20:15:20.140Z","related":["CGA-cqv9-32c2-jcv5","SUSE-RU-2025:20460-1","SUSE-SU-2025:02259-1","SUSE-SU-2025:20209-1","SUSE-SU-2025:20444-1","SUSE-SU-2025:20454-1","SUSE-SU-2025:20458-1","SUSE-SU-2025:20465-1","SUSE-SU-2025:20472-1","SUSE-SU-2025:3986-1","openSUSE-SU-2025:15076-1"],"references":[{"type":"ADVISORY","url":"https://lists.gnupg.org/pipermail/gnupg-announce/2025q1/000491.html"},{"type":"REPORT","url":"https://dev.gnupg.org/rG48978ccb4e20866472ef18436a32744350a65158"},{"type":"REPORT","url":"https://dev.gnupg.org/T7527"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-30258.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"2.4.8"}]},{"events":[{"introduced":"2.5.0"},{"fixed":"2.5.5"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}