+++ This bug was initially created as a clone of Bug #607035 +++ Description of problem: Given the right combination of ThinkPad and X.org, just reading the video output control state is enough to hard-crash X.org. Until the day I somehow find out a model or BIOS cut date to not provide this feature to ThinkPads that can do video switching through X RandR, change permissions so that only processes with CAP_SYS_ADMIN can access any sort of video output control state. This bug could be considered a local DoS I suppose, as it allows any non-privledged local user to cause some versions of X.org to hard-crash some ThinkPads. Reported-by: Jidanni <jidanni> Signed-off-by: Henrique de Moraes Holschuh <hmh.br> Cc: stable Upstream commit: http://git.kernel.org/linus/b525c06cdbd8a3963f0173ccd23f9147d4c384b5
The equivalent of b525c06cdbd8a3963f0173ccd23f9147d4c384b5 is c9438d3d949d4c5f88f630b647011b8381c63ae5 v2.6.33.1~38 So, this fix is already included in our base kernel.