Bug 652122 (CVE-2010-3448) - CVE-2010-3448 kernel: thinkpad-acpi: lock down video output state access
Summary: CVE-2010-3448 kernel: thinkpad-acpi: lock down video output state access
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2010-3448
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 604608 607037 607038 607039 629241 652123
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-11-11 03:06 UTC by Eugene Teo (Security Response)
Modified: 2019-09-29 12:40 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-07-29 14:48:43 UTC
Embargoed:

Attachments (Terms of Use)

Description Eugene Teo (Security Response) 2010-11-11 03:06:55 UTC 
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
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