Bug 1113406 (CVE-2014-4652)

Summary:	CVE-2014-4652 Kernel: ALSA: control: protect user controls against races & memory disclosure
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, aquini, bhu, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mchehab, mcressma, npajkovs, pholasek, 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:	An information leak flaw was found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled access of the user control's state. A local, privileged user could use this flaw to leak kernel memory to user space.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-07-22 19:27:40 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:	1117336, 1117337, 1117338, 1117339, 1117340
Bug Blocks:	1112943

Description Prasad Pandit 2014-06-26 07:01:12 UTC

Linux kernel built with the Advanced Linux Sound Architecture(ALSA) sound
system support(CONFIG_SND) is vulnerable to an information leakage flaw. It
could occur when two applications try to access control state simultaneously.

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

Upstream fix:
-------------
  -> https://git.kernel.org/linus/07f4d9d74a04aa7c72c5dae0ef97565f28f17b92

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2014/06/26/6

Comment 1 Prasad Pandit 2014-07-08 13:29:12 UTC

Statement:

(none)

Comment 5 Martin Prpič 2014-08-18 11:18:12 UTC

IssueDescription:

An information leak flaw was found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled access of the user control's state. A local, privileged user could use this flaw to leak kernel memory to user space.

Comment 6 errata-xmlrpc 2014-08-20 10:51:45 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:1083 https://rhn.redhat.com/errata/RHSA-2014-1083.html

Comment 7 errata-xmlrpc 2014-12-09 20:34:17 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:1971 https://rhn.redhat.com/errata/RHSA-2014-1971.html

Comment 8 errata-xmlrpc 2015-07-22 08:09:07 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:1272 https://rhn.redhat.com/errata/RHSA-2015-1272.html