The systemd project is yet to release a fix for a bug that was disclosed on 28 September but at least one GNU/Linux distribution has patched the same.
The bug, allowing a user to crash a system by using a short command as an ordinary user, was disclosed by a developer named Andrew Ayer.
After running this command, according to Ayer, “You can no longer start and stop daemons. inetd-style services no longer accept connections. You cannot cleanly reboot the system. The system feels generally unstable (e.g. ssh and su hang for 30 seconds since systemd is now integrated with the login system).”
Read more at ITWire
