Bug 1113470 (CVE-2014-4656)

Summary:	CVE-2014-4656 Kernel: ALSA: control: integer overflow in id.index & id.numid
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
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, aquini, bhu, chazlett, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jross, jrusnack, 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 integer overflow flaw was found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled user controls. A local, privileged user could use this flaw to crash the system.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-01-27 22:32:41 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:	1117309, 1117310, 1117311, 1117312, 1117313, 1117314, 1117315, 1149140
Bug Blocks:	1112943

Description Prasad Pandit 2014-06-26 09:05:03 UTC

Linux kernel built with the Advanced Linux Sound Architecture(ALSA) sound
system support(CONFIG_SND) is vulnerable to an integer overflow flaw. It
could occur when user space application removes or adds new controls.

A user/application could use this flaw to crash the system kernel resulting in
DoS.

Upstream fixes:
---------------
  -> https://git.kernel.org/linus/883a1d49f0d77d30012f114b2e19fc141beb3e8e
  -> https://git.kernel.org/linus/ac902c112d90a89e59916f751c2745f4dbdbb4bd

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

Comment 1 Prasad Pandit 2014-07-08 13:17:13 UTC

Statement:

This issue affects the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2. Future kernel updates for Red Hat Enterprise Linux 5 may address this issue.

Comment 5 Martin Prpič 2014-08-18 11:17:39 UTC

IssueDescription:

An integer overflow flaw was found in the way the Linux kernel's Advanced Linux Sound Architecture (ALSA) implementation handled user controls. A local, privileged user could use this flaw to crash the system.

Comment 6 errata-xmlrpc 2014-08-20 10:51:59 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 8 errata-xmlrpc 2014-12-09 20:34:26 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 9 errata-xmlrpc 2015-01-27 19:46:10 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:0087 https://rhn.redhat.com/errata/RHSA-2015-0087.html