Bug 1026243 (CVE-2013-4494) - CVE-2013-4494 kernel: xen: Lock order reversal between page allocation and grant table locks
Summary: CVE-2013-4494 kernel: xen: Lock order reversal between page allocation and gr...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2013-4494
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1026245 1026246 1026248
Blocks: 1026256
TreeView+ depends on / blocked
 
Reported: 2013-11-04 09:24 UTC by Petr Matousek
Modified: 2023-05-12 00:52 UTC (History)
32 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-01-29 18:55:10 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0108 0 normal SHIPPED_LIVE Moderate: kernel security and bug fix update 2014-01-29 22:36:23 UTC

Description Petr Matousek 2013-11-04 09:24:39 UTC 
The locks page_alloc_lock and grant_table.lock are not always taken in the same order.  This opens the possibility of deadlock. As a result, a malicious guest administrator can deny service to the entire host.

References:
http://seclists.org/oss-sec/2013/q4/204

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.
Comment 2 Petr Matousek 2013-11-04 09:29:41 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1026248]
Comment 3 Petr Matousek 2013-11-04 09:34:51 UTC 
Statement:

This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.
Comment 4 Fedora Update System 2013-11-10 06:27:01 UTC 
xen-4.3.1-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2013-11-11 02:30:52 UTC 
xen-4.2.3-7.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2013-11-11 02:34:54 UTC 
xen-4.2.3-7.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 errata-xmlrpc 2014-01-29 17:37:35 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:0108 https://rhn.redhat.com/errata/RHSA-2014-0108.html
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