Bug 922424 (CVE-2012-6537)

Summary:	CVE-2012-6537 Kernel: xfrm_user information leaks copy_to_user_
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	agordeev, anton, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mcressma, npajkovs, plougher, rt-maint, rvrbovsk, 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:	2013-04-23 21:24:07 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	922426, 922427, 922428, 922429
Bug Blocks:	858947

Description Prasad Pandit 2013-03-16 19:42:18 UTC

Linux kernel built with XFRM framework support is vulnerable to a memory
leakage flaw. It occurs while in routines - copy_to_user_state,
copy_to_user_policy and copy_to_user_tmpl.

A user/program could use this flaw to leak kernel memory bytes.

Upstream fix:
-------------
 -> https://git.kernel.org/linus/1f86840f897717f86d523a13e99a447e6a5d2fa5
 -> https://git.kernel.org/linus/7b789836f434c87168eab067cfbed1ec4783dffd
 -> https://git.kernel.org/linus/f778a636713a435d3a922c60b1622a91136560c1

Reference:
----------
 -> http://www.openwall.com/lists/oss-security/2013/03/14/21

Comment 1 Prasad Pandit 2013-03-16 19:45:44 UTC

Statement:

This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise MRG 2.

This issue did affect the version of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.

Comment 3 errata-xmlrpc 2013-04-16 19:07:56 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2013:0747 https://rhn.redhat.com/errata/RHSA-2013-0747.html

Comment 4 errata-xmlrpc 2013-04-23 18:32:56 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0744 https://rhn.redhat.com/errata/RHSA-2013-0744.html