oss-sec mailing list archives

Re: Screen locking programs on Xorg 1.11


From: Michael Gilbert <michael.s.gilbert () gmail com>
Date: Wed, 18 Jan 2012 20:53:40 -0500

On Wed, Jan 18, 2012 at 7:03 PM, Gu1 wrote:
Hi,
I recently found out that it is possible to kill a screensaver/screen
locker program on the latest version of Xorg (1.11 shipped with
archlinux, debian wheezy..) using the Ctrl+Alt+Multiply key binding.

This behavior seems to have been introduced in a recent commit[1] and i
couldn't find a way to disable it.

All screen locking programs i tested (gnome-screensaver, kscreenlocker,
slock, slimlock...), are basically rendered useless.

Not sure if this is a bug or a feature... :)

All I can say is wow.  A key combo/code that reproducibly kills all
screen lockers is definitely *not* a feature.  This demonstrates the
importance of code review in critical code.  Nice find.

Best wishes,
Mike


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