CVE-2007-5906
Xen 3.1.1 allows virtual guest system users to cause a denial of service (hypervisor crash) by using a debug register (DR7) to set certain breakpoints.
Date published : 2007-11-09
http://www.securityfocus.com/bid/27219
http://lists.xensource.com/archives/html/xen-devel/2007-10/msg01048.html
