The managerinvokenotify_message function in systemd 231 and earlier allows local users to cause a denial of service (assertion failure and PID 1 hang) via a zero-length message received over a notify socket.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "libnss-myhostname", "binary_version": "229-4ubuntu10" }, { "binary_name": "libnss-mymachines", "binary_version": "229-4ubuntu10" }, { "binary_name": "libnss-resolve", "binary_version": "229-4ubuntu10" }, { "binary_name": "libpam-systemd", "binary_version": "229-4ubuntu10" }, { "binary_name": "libsystemd-dev", "binary_version": "229-4ubuntu10" }, { "binary_name": "libsystemd0", "binary_version": "229-4ubuntu10" }, { "binary_name": "libudev-dev", "binary_version": "229-4ubuntu10" }, { "binary_name": "libudev1", "binary_version": "229-4ubuntu10" }, { "binary_name": "systemd", "binary_version": "229-4ubuntu10" }, { "binary_name": "systemd-container", "binary_version": "229-4ubuntu10" }, { "binary_name": "systemd-coredump", "binary_version": "229-4ubuntu10" }, { "binary_name": "systemd-journal-remote", "binary_version": "229-4ubuntu10" }, { "binary_name": "systemd-sysv", "binary_version": "229-4ubuntu10" }, { "binary_name": "udev", "binary_version": "229-4ubuntu10" } ] }