Bug 1064440 (CVE-2014-0077)

Summary:	CVE-2014-0077 kernel: vhost-net: insufficiency in handling of big packets in handle_rx()
Product:	[Other] Security Response	Reporter:	Petr Matousek <pmatouse>
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, dhoward, fhrbata, gbarros, jasowang, jkurik, kernel-mgr, lwang, mleitner, mmilgram, mst, npajkovs, pholasek, qiguo, security-response-team, seldridg, twest
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:	2014-06-03 07:15:19 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:	1064442, 1064444, 1064446, 1074439, 1074440, 1081504
Bug Blocks:	994246, 1064451

Description Petr Matousek 2014-02-12 16:00:54 UTC

A flaw was found in the way handle_rx() function handled big packets when mergeable buffers were disabled.

A privileged user in the guest could use this flaw to crash the host, or, potentially, escalate their privileges to the ones of the hosting qemu process by corrupting qemu memory.

Acknowledgements:

This issue was discovered by Michael S. Tsirkin of Red Hat.

Comment 2 Petr Matousek 2014-02-12 16:06:00 UTC

Statement:

This issue does not affect Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.

Comment 3 Ronen Hod 2014-02-24 07:33:57 UTC

*** Bug 1064102 has been marked as a duplicate of this bug. ***

Comment 5 Petr Matousek 2014-03-27 10:04:35 UTC

Upstream patch submission:

http://article.gmane.org/gmane.linux.network/311012

Comment 6 Petr Matousek 2014-03-27 13:15:53 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1081504]

Comment 7 Fedora Update System 2014-04-04 09:45:51 UTC

kernel-3.13.8-200.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2014-04-09 00:51:28 UTC

kernel-3.13.9-100.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 errata-xmlrpc 2014-05-07 18:46:59 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:0475 https://rhn.redhat.com/errata/RHSA-2014-0475.html

Comment 10 errata-xmlrpc 2014-06-03 16:27:04 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.3 EUS - Server and Compute Node Only

Via RHSA-2014:0593 https://rhn.redhat.com/errata/RHSA-2014-0593.html

Comment 11 errata-xmlrpc 2014-06-04 17:07:33 UTC

This issue has been addressed in following products:

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

Via RHSA-2014:0634 https://rhn.redhat.com/errata/RHSA-2014-0634.html

Comment 12 errata-xmlrpc 2014-06-05 14:58:54 UTC

This issue has been addressed in following products:

  RHEV-H and Agents for RHEL-6

Via RHSA-2014:0629 https://rhn.redhat.com/errata/RHSA-2014-0629.html