6.6 Medium
AI Score
Confidence
High
4.6 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:S/C:N/I:N/A:C
0.001 Low
EPSS
Percentile
16.3%
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.
old-list-archives.xen.org/archives/html/xen-devel/2011-06/msg01106.html
old-list-archives.xen.org/archives/html/xen-devel/2011-08/msg00450.html
secunia.com/advisories/45622
secunia.com/advisories/51468
www.debian.org/security/2012/dsa-2582
www.securityfocus.com/bid/49146
xenbits.xen.org/hg/staging/xen-4.1-testing.hg/rev/84e3706df07a