Bug 1023477 (CVE-2013-4470)

Summary:	CVE-2013-4470 Kernel: net: memory corruption with UDP_CORK and UFO
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	agordeev, anton, aquini, bhu, davej, dhoward, esammons, fhrbata, gansalmon, gbarros, iboverma, itamar, jforbes, jkacur, jkurik, jonathan, jpirko, jross, jrusnack, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mcressma, npajkovs, pholasek, plougher, pmatouse, 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:	2014-01-28 18:35:29 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:	1014599, 1023490, 1023491, 1023492, 1023493, 1023494, 1023495, 1052129
Bug Blocks:	1022007

Description Prasad Pandit 2013-10-25 13:52:19 UTC

Linux kernel built with an Ethernet driver(ex virtio-net) which has UDP
Fragmentation Offload(UFO) feature ON is vulnerable to a memory corruption flaw
when UDP_CORK socket option is set. It could occur when sending large messages,
wherein not all messages are greater than maximum transfer unit(MTU) of the
underlying medium.

An unprivileged user/program could use this flaw to crash the kernel resulting in DoS, or potentially escalate their privileges on the system.


Upstream fix:
-------------
 -> http://patchwork.ozlabs.org/patch/285292/
 -> https://git.kernel.org/linus/c547dbf55d5f8cf615ccc0e7265e98db27d3fb8b
 -> https://git.kernel.org/linus/e93b7d748be887cd7639b113ba7d7ef792a7efb9

Comment 1 Prasad Pandit 2013-10-25 13:55:19 UTC

Statement:

This issue does not affect the version of the kernel package as shipped with Red Hat Enterprise Linux 5.

Comment 2 Prasad Pandit 2013-10-25 14:20:49 UTC

Acknowledgements:

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

Comment 5 Prasad Pandit 2013-10-25 14:32:15 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1023495]

Comment 8 Fedora Update System 2013-11-05 02:59:30 UTC

kernel-3.11.6-201.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 Fedora Update System 2013-11-10 07:57:03 UTC

kernel-3.11.7-300.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2013-11-13 02:16:44 UTC

kernel-3.11.7-100.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 11 errata-xmlrpc 2013-12-12 19:24:25 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1801 https://rhn.redhat.com/errata/RHSA-2013-1801.html

Comment 14 errata-xmlrpc 2014-01-28 17:40:12 UTC

This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:0100 https://rhn.redhat.com/errata/RHSA-2014-0100.html

Comment 15 errata-xmlrpc 2014-03-11 17:07:56 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.4 EUS - Server and Compute Node Only

Via RHSA-2014:0284 https://rhn.redhat.com/errata/RHSA-2014-0284.html