In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output

In systemd 260 before 261, a local unprivileged user can trigger an assert via an IPC API call with an array or map that has a null element

In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User=<unset> unit exists and is running

systemd: Local unprivileged user can trigger an assert