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.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Xen | Xen | * | 4.1.1 (including) |
| Red Hat Enterprise Linux 5 | RedHat | kernel-0:2.6.18-274.7.1.el5 | * |
| Xen | Ubuntu | oneiric | * |
| Xen-3.1 | Ubuntu | hardy | * |
| Xen-3.2 | Ubuntu | hardy | * |
| Xen-3.3 | Ubuntu | lucid | * |
| Xen-3.3 | Ubuntu | maverick | * |
| Xen-3.3 | Ubuntu | natty | * |
References
- 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://secunia.com/advisories/45622
- http://secunia.com/advisories/51468
- http://www.debian.org/security/2012/dsa-2582
- http://www.securityfocus.com/bid/49146
- http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg/rev/84e3706df07a
- 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://secunia.com/advisories/45622
- http://secunia.com/advisories/51468
- http://www.debian.org/security/2012/dsa-2582
- http://www.securityfocus.com/bid/49146
- http://xenbits.xen.org/hg/staging/xen-4.1-testing.hg/rev/84e3706df07a