Bug 1029120 (CVE-2013-4553) - CVE-2013-4553 kernel: xen: lock order reversal between page_alloc_lock and mm_rwlock
Summary: CVE-2013-4553 kernel: xen: lock order reversal between page_alloc_lock and mm...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2013-4553
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: 1034925
Blocks: 1029116
TreeView+ depends on / blocked
 
Reported: 2013-11-11 17:15 UTC by Petr Matousek
Modified: 2023-05-12 00:57 UTC (History)
14 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2013-11-12 11:34:45 UTC
Embargoed:

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Description Petr Matousek 2013-11-11 17:15:33 UTC 
The locks page_alloc_lock and mm_rwlock are not always taken in the same order.  This raises the possibility of deadlock.

The incorrect order occurs only in the implementation of the deprecated domctl hypercall XEN_DOMCTL_getmemlist.

A malicious guest administrator may be able to deny service to the entire host.

Acknowledgements:

Red Hat would like to thank the Xen project for reporting this issue.
Comment 5 Petr Matousek 2013-11-12 11:44:37 UTC 
Statement:

Not vulnerable.

This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.

This issue did not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2 as we did not have support for Xen hypervisor.
Comment 6 Petr Matousek 2013-11-26 17:34:22 UTC 
This issue is public now:

  http://www.openwall.com/lists/oss-security/2013/11/26/8
Comment 7 Petr Matousek 2013-11-26 17:39:29 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1034925]
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