Bug 987627 (CVE-2013-4162)

Summary:	CVE-2013-4162 Kernel: net: panic while pushing pending data out of a IPv6 socket with UDP_CORK enabled
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, bhu, davej, dhoward, esammons, fhrbata, fj3263bi, gansalmon, iboverma, itamar, jforbes, jkacur, jkurik, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mcressma, plougher, rt-maint, rvrbovsk, tgraf, 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:	2014-06-10 05:24:14 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:	987647, 987648, 987649, 987651, 987653, 987654, 987656, 988355
Bug Blocks:	984924

Description Prasad Pandit 2013-07-23 19:13:39 UTC

Linux kernel built with IPv6 networking is vulnerable to a crash while sending
data as a single datagram over IPv6 socket when UDP_CORK option set. UDP_CORK
enables accumulating data and sending it as a single datagram.

An unprivileged user/program could use this flaw to crash the kernel, resulting in local DoS.

Upstream fix:
=============
 -> https://git.kernel.org/linus/8822b64a0fa64a5dd1dfcf837c5b0be83f8c05d1


Acknowledgements:

Red Hat would like to thank Hannes Frederic Sowa for reporting this issue.

Comment 1 Prasad Pandit 2013-07-23 19:47:53 UTC

Statement:

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

Comment 4 Prasad Pandit 2013-07-23 19:57:09 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 987656]

Comment 9 errata-xmlrpc 2013-09-16 17:13:56 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:1264 https://rhn.redhat.com/errata/RHSA-2013-1264.html

Comment 10 errata-xmlrpc 2013-09-26 17:24:28 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2013:1292 https://rhn.redhat.com/errata/RHSA-2013-1292.html

Comment 11 errata-xmlrpc 2013-10-16 17:14:52 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1436 https://rhn.redhat.com/errata/RHSA-2013-1436.html

Comment 12 errata-xmlrpc 2013-11-14 17:41:25 UTC

This issue has been addressed in following products:

  OpenStack 3 for RHEL 6

Via RHSA-2013:1520 https://rhn.redhat.com/errata/RHSA-2013-1520.html