CVE-2012-5634
First published: Thu Feb 14 2013(Updated: )
Xen 4.2.x, 4.1.x, and 4.0, when using Intel VT-d for PCI passthrough, does not properly configure VT-d when supporting a device that is behind a legacy PCI Bridge, which allows local guests to cause a denial of service to other guests by injecting an interrupt.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | =4.0.0 | |
| Xen xen-unstable | =4.1.0 | |
| Xen xen-unstable | =4.1.1 | |
| Xen xen-unstable | =4.1.2 | |
| Xen xen-unstable | =4.1.3 | |
| Xen xen-unstable | =4.1.4 | |
| Xen xen-unstable | =4.2.0 | |
| Xen xen-unstable | =4.2.1 |
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Reference Links
- http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html
- http://lists.opensuse.org/opensuse-updates/2013-04/msg00051.html
- http://lists.opensuse.org/opensuse-updates/2013-04/msg00052.html
- http://lists.opensuse.org/opensuse-updates/2013-06/msg00049.html
- http://secunia.com/advisories/55082
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://www.debian.org/security/2013/dsa-2636
- http://www.openwall.com/lists/oss-security/2013/01/09/5
Frequently Asked Questions
What is the severity of CVE-2012-5634?
The severity of CVE-2012-5634 is considered to be medium due to its potential to cause a denial of service.
How do I fix CVE-2012-5634?
To fix CVE-2012-5634, upgrade to a version of Xen that is not affected, specifically versions later than 4.2.1.
What type of attack does CVE-2012-5634 allow?
CVE-2012-5634 allows local guests to perform a denial of service attack against other guests.
Which versions of Xen are affected by CVE-2012-5634?
Xen versions 4.0.0, 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.1.4, 4.2.0, and 4.2.1 are affected by CVE-2012-5634.
What is the underlying cause of CVE-2012-5634?
The underlying cause of CVE-2012-5634 is improper configuration of Intel VT-d related to PCI passthrough when using a legacy PCI Bridge.
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- vendor/xen
- canonical/xen xen-unstable
- version/xen xen-unstable/4.0.0
- version/xen xen-unstable/4.1.0
- version/xen xen-unstable/4.1.1
- version/xen xen-unstable/4.1.2
- version/xen xen-unstable/4.1.3
- version/xen xen-unstable/4.1.4
- version/xen xen-unstable/4.2.0
- version/xen xen-unstable/4.2.1