CVE-2011-3131
First published: Thu Dec 13 2012(Updated: )
Xen 4.1.1 and earlier allows local guest OS kernels with control of a PCI[E] device to cause a denial of service (CPU consumption and host hang) via many crafted DMA requests that are denied by the IOMMU, which triggers a livelock.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen xen-unstable | <=4.1.1 |
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Reference Links
- http://www.securityfocus.com/bid/49146
- http://secunia.com/advisories/45622
- http://old-list-archives.xen.org/archives/html/xen-devel/2011-06/msg01106.html
- http://old-list-archives.xen.org/archives/html/xen-devel/2011-08/msg00450.html
- http://www.debian.org/security/2012/dsa-2582
- http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg/rev/84e3706df07a
- http://secunia.com/advisories/51468
Frequently Asked Questions
What is the severity of CVE-2011-3131?
CVE-2011-3131 is classified as a denial of service vulnerability that can lead to CPU consumption and host system hang.
How do I fix CVE-2011-3131?
To mitigate CVE-2011-3131, upgrade to Xen version 4.1.2 or later.
What type of systems are affected by CVE-2011-3131?
CVE-2011-3131 affects local guest OS kernels running on Xen 4.1.1 and earlier with control of a PCI[E] device.
Can CVE-2011-3131 be exploited remotely?
No, CVE-2011-3131 requires local access to the guest OS to exploit the vulnerability.
What impact does CVE-2011-3131 have on a Xen host?
Exploitation of CVE-2011-3131 can cause a denial of service leading to excessive CPU utilization and potential host hang.
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