Bug 824178 (CVE-2012-2384)

Summary:	CVE-2012-2384 kernel: drm/i915: integer overflow in i915_gem_do_execbuffer()
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agordeev, airlied, anton, arozansk, bhu, davej, dhoward, fhrbata, gansalmon, itamar, jforbes, jkacur, jonathan, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mmilgram, mrg-program-list, plougher, sforsber, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-08-24 12:39:57 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	824561, 824563, 824564, 824565
Bug Blocks:	824180

Description Petr Matousek 2012-05-22 21:48:06 UTC

Description of the problem:
On 32-bit systems, a large args->num_cliprects from userspace via ioctl may overflow the allocation size, leading to out-of-bounds access.

References:
http://www.openwall.com/lists/oss-security/2012/05/21/1

Upstream fix:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=44afb3a04391a74309d16180d1e4f8386fdfa745

Comment 1 Josh Boyer 2012-05-23 16:03:39 UTC

FYI.  This was fixed in 3.3.5 (stable commit 4a265435c87b19175c3906ff49ffe5bf4a4cc228).  All Fedora branches are on that or newer already.

Comment 2 Josh Boyer 2012-05-23 16:04:15 UTC

Sorry, that should have been stable commit 9f4660213e58b3b78dc75bf3e3b4126dbe9a0b14

Comment 5 Petr Matousek 2012-07-04 05:33:30 UTC

Statement:

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2. This issue was addressed in Red Hat Enterprise Linux 6 via RHSA-2012:1304 https://rhn.redhat.com/errata/RHSA-2012-1304.html.

Comment 6 errata-xmlrpc 2012-09-25 18:59:53 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:1304 https://rhn.redhat.com/errata/RHSA-2012-1304.html