This behaviour is consistent with UNIX since the dawn of time. It's not considered a security vulnerability since no access can be obtained.
But it's not arguably invalid; I'd say it's a bug that you can switch out of X at all though! ** This bug is no longer flagged as a security issue ** Changed in: upstart (Ubuntu) Importance: Undecided => Low Status: New => Triaged -- control-alt-delete should not restart the machine if gdm,kdm, xdm, or X is running https://bugs.launchpad.net/bugs/300771 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs