[prev in list] [next in list] [prev in thread] [next in thread]
List: oss-security
Subject: [oss-security] kernel: thinkpad-acpi: lock down video output state access
From: Eugene Teo <eugeneteo () kernel ! sg>
Date: 2010-06-23 2:55:05
Message-ID: 4C217789.1040707 () kernel ! sg
[Download RAW message or body]
Just a heads up. Not requesting a CVE name for this since it only affect
certain thinkpads/xorg.
"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."
Upstream commit:
http://git.kernel.org/linus/b525c06cdbd8a3963f0173ccd23f9147d4c384b5
Thanks, Eugene
--
main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); }
[prev in list] [next in list] [prev in thread] [next in thread]
Configure |
About |
News |
Add a list |
Sponsored by KoreLogic