Bug 773280 (CVE-2012-0038)

Summary:	CVE-2012-0038 kernel: xfs heap overflow
Product:	[Other] Security Response	Reporter:	Eugene Teo (Security Response) <eteo>
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, anton, arozansk, bhu, dchinner, dhoward, esandeen, fhrbata, jbacik, jkacur, kernel-mgr, lczerner, lgoncalv, lwang, plougher, pmatouse, rt-maint, rwheeler, sforsber, vgoyal, 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 13:15:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	773282, 773283, 773284, 773285, 782682, 816625
Bug Blocks:	773263

Description Eugene Teo (Security Response) 2012-01-11 12:17:06 UTC

Commit ef14f0c1578dce4b688726eb2603e50b62d6665a introduced an integer overflow in the ACL handling code, which could further lead to heap-based buffer overflow via a crafted filesystem.

Upstream commits:
http://git.kernel.org/linus/fa8b18edd752a8b4e9d1ee2cd615b82c93cf8bba
http://git.kernel.org/linus/093019cf1b18dd31b2c3b77acce4e000e2cbc9ce

Both commits are needed to fix the vulnerability.

The vulnerability seems to first appear in 2.6.32-rc1.  3.2 contains only the
first commit.

Acknowledgements:

Red Hat would like to thank Wang Xi for reporting this issue.

Comment 3 Eugene Teo (Security Response) 2012-01-18 07:09:55 UTC

Created kernel tracking bugs for this issue

Affects: fedora-all [bug 782682]

Comment 5 errata-xmlrpc 2012-02-23 20:24:15 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2012:0333 https://rhn.redhat.com/errata/RHSA-2012-0333.html

Comment 6 errata-xmlrpc 2012-03-06 18:46:24 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:0350 https://rhn.redhat.com/errata/RHSA-2012-0350.html

Comment 7 Eugene Teo (Security Response) 2012-03-07 03:00:44 UTC

Statement:

This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4 as it did not have support for the XFS file system. It did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 5 as it did not backport the upstream commit ef14f0c1 that introduced the vulnerability. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2012-0350.html, and https://rhn.redhat.com/errata/RHSA-2012-0333.html.

Comment 9 errata-xmlrpc 2012-06-26 18:43:05 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.1 EUS - Server Only

Via RHSA-2012:1042 https://rhn.redhat.com/errata/RHSA-2012-1042.html