{"id":"CVE-2018-15855","details":"Unchecked NULL pointer usage in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file, because the XkbFile for an xkb_geometry section was mishandled.","modified":"2026-04-16T06:18:47.433081434Z","published":"2018-08-25T21:29:01.733Z","related":["SUSE-SU-2018:3685-1","SUSE-SU-2024:0037-1"],"references":[{"type":"ADVISORY","url":"https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201810-05"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3786-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3786-2/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2079"},{"type":"FIX","url":"https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/xkbcommon/libxkbcommon","events":[{"introduced":"0"},{"fixed":"87046f56efc89d3b0771df9b4fefcda39ade3dd1"},{"fixed":"917636b1d0d70205a13f89062b95e3a0fc31d4ff"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"0.8.1"}]}}],"versions":["xkbcommon-0.2.0","xkbcommon-0.3.0","xkbcommon-0.3.1","xkbcommon-0.3.2","xkbcommon-0.4.0","xkbcommon-0.4.1","xkbcommon-0.4.2","xkbcommon-0.4.3","xkbcommon-0.5.0","xkbcommon-0.6.0","xkbcommon-0.6.1","xkbcommon-0.7.0","xkbcommon-0.7.1","xkbcommon-0.7.2","xkbcommon-0.8.0"],"database_specific":{"vanir_signatures":[{"id":"CVE-2018-15855-2c02092e","signature_type":"Function","signature_version":"v1","deprecated":false,"digest":{"length":1332,"function_hash":"313427961432042723751513025005151541073"},"source":"https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff","target":{"function":"CompileKeymap","file":"src/xkbcomp/keymap.c"}},{"signature_type":"Line","id":"CVE-2018-15855-97bd6938","signature_version":"v1","deprecated":false,"digest":{"threshold":0.9,"line_hashes":["88409033307862462165229164438251216293","122701994007965251946819529201359975982","332971833168997577573162901784827898012","252483941540618463363549744586113690502","201764178136538960686405894051010879341"]},"source":"https://github.com/xkbcommon/libxkbcommon/commit/917636b1d0d70205a13f89062b95e3a0fc31d4ff","target":{"file":"src/xkbcomp/keymap.c"}}],"vanir_signatures_modified":"2026-04-11T12:27:41Z","source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-15855.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}