{"id":"CVE-2019-6454","details":"An issue was discovered in sd-bus in systemd 239. bus_process_object() in libsystemd/sd-bus/bus-objects.c allocates a variable-length stack buffer for temporarily storing the object path of incoming D-Bus messages. An unprivileged local user can exploit this by sending a specially crafted message to PID1, causing the stack pointer to jump over the stack guard pages into an unmapped memory region and trigger a denial of service (systemd PID1 crash and kernel panic).","modified":"2026-04-10T04:19:45.489438Z","published":"2019-03-21T16:01:08.203Z","related":["SUSE-SU-2019:0424-1","SUSE-SU-2019:0425-1","SUSE-SU-2019:0425-2","SUSE-SU-2019:0426-1","SUSE-SU-2019:0428-1","SUSE-SU-2019:1265-1","SUSE-SU-2019:1364-1","SUSE-SU-2019:1364-2","openSUSE-SU-2019:0255-1","openSUSE-SU-2024:11420-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.html"},{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2019/02/19/1"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0990"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:1322"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20190327-0004/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3891-1/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2019/dsa-4393"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2019/02/msg00031.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2019-02/msg00070.html"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/107081"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:0368"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:1502"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:2805"},{"type":"FIX","url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10278"},{"type":"FIX","url":"http://www.openwall.com/lists/oss-security/2019/02/18/3"},{"type":"FIX","url":"https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c"},{"type":"EVIDENCE","url":"http://www.openwall.com/lists/oss-security/2021/07/20/2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/systemd/systemd","events":[{"introduced":"0"},{"last_affected":"de7436b02badc82200dc127ff190b8155769b8e7"},{"introduced":"0"},{"last_affected":"f9a61ef2c9e3b330d9e2e37977b3dd5758a4b853"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"239"},{"introduced":"0"},{"last_affected":"29"}]}}],"versions":["v1","v10","v11","v12","v13","v14","v15","v16","v17","v18","v183","v184","v185","v186","v187","v188","v189","v19","v190","v191","v192","v193","v194","v195","v196","v197","v198","v199","v2","v20","v200","v201","v202","v203","v204","v205","v206","v207","v208","v209","v21","v210","v211","v212","v213","v214","v215","v216","v217","v218","v219","v22","v220","v221","v222","v223","v224","v225","v226","v227","v228","v229","v23","v230","v231","v232","v233","v234","v235","v236","v237","v238","v239","v24","v25","v26","v27","v28","v29","v3","v30","v31","v32","v33","v34","v35","v36","v37","v38","v39","v4","v40","v41","v42","v43","v44","v5","v6","v7","v8","v9"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6454.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"15.0"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.10"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.5"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.5"}]},{"events":[{"introduced":"0"},{"last_affected":"8.1"}]},{"events":[{"introduced":"0"},{"last_affected":"8.2"}]},{"events":[{"introduced":"0"},{"last_affected":"8.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.5"}]},{"events":[{"introduced":"0"},{"last_affected":"8.1"}]},{"events":[{"introduced":"0"},{"last_affected":"8.2"}]},{"events":[{"introduced":"0"},{"last_affected":"8.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"8.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.5"}]},{"events":[{"introduced":"0"},{"last_affected":"8.1"}]},{"events":[{"introduced":"0"},{"last_affected":"8.2"}]},{"events":[{"introduced":"0"},{"last_affected":"8.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.3"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.6"}]},{"events":[{"introduced":"0"},{"last_affected":"8.2"}]},{"events":[{"introduced":"0"},{"last_affected":"8.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.6"}]},{"events":[{"introduced":"0"},{"last_affected":"7.3"}]},{"events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