{"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":"2026-08-07T11:48:21.771939733Z","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"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*"],"extracted_events":[{"fixed":"7.7.2.21"},{"introduced":"7.8.0"},{"fixed":"7.8.2.8"},{"introduced":"8.0.0"},{"fixed":"8.1.1"}],"source":"CPE_RANGE","vendor_product":"mcafee:web_gateway"},{"cpes":["cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*","cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"16.04"},{"last_affected":"16.04"},{"introduced":"18.04"},{"last_affected":"18.04"},{"introduced":"18.10"},{"last_affected":"18.10"}],"source":"CPE_STRING","vendor_product":"canonical:ubuntu_linux"},{"vendor_product":"debian:debian_linux","cpes":["cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"},{"introduced":"9.0"},{"last_affected":"9.0"}],"source":"CPE_STRING"},{"source":"CPE_STRING","vendor_product":"fedoraproject:fedora","cpes":["cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"29"},{"last_affected":"29"}]},{"extracted_events":[{"introduced":"15.0"},{"last_affected":"15.0"}],"source":"CPE_STRING","vendor_product":"opensuse:leap","cpes":["cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*"]},{"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux","cpes":["cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.5:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.5"},{"last_affected":"7.5"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_compute_node_eus"},{"vendor_product":"redhat:enterprise_linux_desktop","cpes":["cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.0"},{"last_affected":"7.0"}],"source":"CPE_STRING"},{"extracted_events":[{"introduced":"7.4"},{"last_affected":"7.4"},{"introduced":"7.5"},{"last_affected":"7.5"},{"introduced":"8.1"},{"last_affected":"8.1"},{"introduced":"8.2"},{"last_affected":"8.2"},{"introduced":"8.4"},{"last_affected":"8.4"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_eus","cpes":["cpe:2.3:o:redhat:enterprise_linux_eus:7.4:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_eus:7.5:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*"]},{"extracted_events":[{"introduced":"7.4"},{"last_affected":"7.4"},{"introduced":"7.5"},{"last_affected":"7.5"},{"introduced":"8.1"},{"last_affected":"8.1"},{"introduced":"8.2"},{"last_affected":"8.2"},{"introduced":"8.4"},{"last_affected":"8.4"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_for_ibm_z_systems_eus","cpes":["cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:7.4:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:7.5:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.1:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*"]},{"extracted_events":[{"introduced":"7.4"},{"last_affected":"7.4"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_for_power_big_endian_eus","cpes":["cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.4:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"8.0"},{"last_affected":"8.0"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_for_power_little_endian"},{"cpes":["cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:7.4:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:7.5:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.1:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.2:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"7.4"},{"last_affected":"7.4"},{"introduced":"7.5"},{"last_affected":"7.5"},{"introduced":"8.1"},{"last_affected":"8.1"},{"introduced":"8.2"},{"last_affected":"8.2"},{"introduced":"8.4"},{"last_affected":"8.4"}],"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_for_power_little_endian_eus"},{"source":"CPE_STRING","vendor_product":"redhat:enterprise_linux_server","cpes":["cpe:2.3:o:r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FIX","url":"https://github.com/systemd/systemd/commits/master/src/libsystemd/sd-bus/bus-objects.c"},{"type":"FIX","url":"https://kc.mcafee.com/corporate/index?page=content&id=SB10278"},{"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":"de7436b02badc82200dc127ff190b8155769b8e7"},{"last_affected":"de7436b02badc82200dc127ff190b8155769b8e7"}],"database_specific":{"cpe":"cpe:2.3:a:systemd_project:systemd:239:*:*:*:*:*:*:*","extracted_events":[{"introduced":"239"},{"last_affected":"239"}],"source":"CPE_STRING"}}],"versions":["239","v239"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6454.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/systemd/systemd-stable","events":[{"introduced":"de7436b02badc82200dc127ff190b8155769b8e7"},{"last_affected":"de7436b02badc82200dc127ff190b8155769b8e7"}],"database_specific":{"cpe":"cpe:2.3:a:systemd_project:systemd:239:*:*:*:*:*:*:*","extracted_events":[{"introduced":"239"},{"last_affected":"239"}],"source":"CPE_STRING"}}],"versions":["239","v239"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-6454.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}