{"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":"2026-05-18T05:52:13.822988697Z","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":[{"vendor_product":"canonical:ubuntu_linux","source":"CPE_FIELD","extracted_events":[{"last_affected":"16.04"},{"last_affected":"18.04"},{"last_affected":"18.10"}],"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:*:*:*:*:*:*:*"]},{"vendor_product":"debian:debian_linux","source":"CPE_FIELD","extracted_events":[{"last_affected":"8.0"},{"last_affected":"9.0"}],"cpes":["cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*","cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"]},{"vendor_product":"fedoraproject:fedora","source":"CPE_FIELD","extracted_events":[{"last_affected":"29"}],"cpes":["cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"fixed":"7.7.2.21"},{"introduced":"7.8.0"},{"fixed":"7.8.2.8"},{"introduced":"8.0.0"},{"fixed":"8.1.1"}],"vendor_product":"mcafee:web_gateway"},{"vendor_product":"opensuse:leap","source":"CPE_FIELD","extracted_events":[{"last_affected":"15.0"}],"cpes":["cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"last_affected":"8.0"}],"vendor_product":"redhat:enterprise_linux"},{"vendor_product":"redhat:enterprise_linux_compute_node_eus","source":"CPE_FIELD","extracted_events":[{"last_affected":"7.5"}],"cpes":["cpe:2.3:o:redhat:enterprise_linux_compute_node_eus:7.5:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"last_affected":"7.0"}],"vendor_product":"redhat:enterprise_linux_desktop"},{"vendor_product":"redhat:enterprise_linux_eus","source":"CPE_FIELD","extracted_events":[{"last_affected":"7.4"},{"last_affected":"7.5"},{"last_affected":"8.1"},{"last_affected":"8.2"},{"last_affected":"8.4"}],"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:*:*:*:*:*:*:*"]},{"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:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"last_affected":"7.4"},{"last_affected":"7.5"},{"last_affected":"8.1"},{"last_affected":"8.2"},{"last_affected":"8.4"}],"vendor_product":"redhat:enterprise_linux_for_ibm_z_systems_eus"},{"vendor_product":"redhat:enterprise_linux_for_power_big_endian_eus","source":"CPE_FIELD","extracted_events":[{"last_affected":"7.4"}],"cpes":["cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian_eus:7.4:*:*:*:*:*:*:*"]},{"vendor_product":"redhat:enterprise_linux_for_power_little_endian","source":"CPE_FIELD","extracted_events":[{"last_affected":"8.0"}],"cpes":["cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*"]},{"vendor_product":"redhat:enterprise_linux_for_power_little_endian_eus","source":"CPE_FIELD","extracted_events":[{"last_affected":"7.4"},{"last_affected":"7.5"},{"last_affected":"8.1"},{"last_affected":"8.2"},{"last_affected":"8.4"}],"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:*:*:*:*:*:*:*"]},{"cpes":["cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"last_affected":"7.0"}],"vendor_product":"redhat:enterprise_linux_server"},{"cpes":["cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*","cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*"],"source":"CPE_FIELD","extracted_events":[{"last_affected":"7.3"},{"last_affected":"7.4"},{"last_affected":"7.6"},{"last_affected":"8.2"},{"last_affected":"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