Design/Logic Flaw

The setdebugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service host crash by writing to the reserved bits of the DR7 debug control register...

CVE-2012-3494

The setdebugreg hypercall in include/asm-x86/debugreg.h in Xen 4.0, 4.1, and 4.2, and Citrix XenServer 6.0.2 and earlier, when running on x86-64 systems, allows local OS guest users to cause a denial of service host crash by writing to the reserved bits of the DR7 debug control register...

PT-2012-4759

Name of the Vulnerable Software and Affected Versions Xen versions 4.0 through 4.2 Citrix XenServer version 6.0.2 and earlier Description The issue allows local OS guest users to cause a denial of service by writing to the reserved bits of the DR7 debug control register. This is possible through...