Bug 680000 - (CVE-2011-1016) CVE-2011-1016 kernel: drm/radeon/kms: check AA resolve registers on r300
CVE-2011-1016 kernel: drm/radeon/kms: check AA resolve registers on r300
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
high Severity high
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Assigned To: Red Hat Product Security
: Security
Depends On: 680001 680002 680003
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Reported: 2011-02-23 22:39 EST by Eugene Teo (Security Response)
Modified: 2015-07-29 13:47 EDT (History)
12 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-07-29 09:57:39 EDT
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Description Eugene Teo (Security Response) 2011-02-23 22:39:07 EST
Check values passed in to AARESOLVE_OFFSET on r300. It can be used to write
arbitrary data to VRAM, GTT, etc. This is specific to a range of GPUs only.

drm/radeon/kms: check AA resolve registers on r300

[PATCH] drm/radeon: fix regression with AA resolve checking
https://patchwork.kernel.org/patch/576101/ ->
Comment 3 Eugene Teo (Security Response) 2011-02-24 20:15:58 EST
Both patches have been committed to the upstream kernel.
Comment 4 Vincent Danen 2011-02-28 12:56:15 EST
This was assigned CVE-2011-1016:

The Radeon GPU drivers in the Linux kernel before 2.6.38-rc5 do not properly validate data related to the AA resolve registers, which allows local users to write to arbitrary memory locations associated with (1) Video RAM (aka VRAM) or (2) the Graphics Translation Table (GTT) via crafted values.

Comment 5 errata-xmlrpc 2011-05-10 14:10:45 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0498 https://rhn.redhat.com/errata/RHSA-2011-0498.html
Comment 6 Eugene Teo (Security Response) 2011-07-19 01:48:13 EDT

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise MRG as they did not backport the upstream commits fff1ce4d and 45e4039c that introduced this issue. This has been addressed in Red Hat Enterprise Linux 6 via https://rhn.redhat.com/errata/RHSA-2011-0498.html.

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