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 CVE-2012-3494 issue affects Xen hypervisor code, specifically the set_debugreg hypercall in include/asm-x86/debugreg.h, impacting Xen 4.0–4.2 and Citrix XenServer 6.0.2 and earlier on x86-64. The vulnerability arises when a guest OS user can write to the reserved bits of the DR7 debug control...

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...