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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)."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"refsource":"FEDORA","name":"FEDORA-2019-8434288a24","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/N67IOBOTDOMVNQJ5QRU2MXLEECXPGNVJ/"},{"refsource":"MLIST","name":"[oss-security] 20190218 CVE-2019-6454: systemd (PID1) crash with specially crafted D-Bus 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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).","Type":"Description","Title":null},{"CveYear":"2019","CveId":"6454","Ordinal":"2","NoteData":"2019-03-17","Type":"Other","Title":"Published"},{"CveYear":"2019","CveId":"6454","Ordinal":"3","NoteData":"2021-07-20","Type":"Other","Title":"Modified"}]}}}