4.6 Medium
CVSS2
Attack Vector
LOCAL
Attack 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
8.4 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
36.2%
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