{"schemaVersion":3,"id":"CVE-2012-3494","aliases":["DEBIAN-CVE-2012-3494"],"status":"published","duplicateOf":null,"title":null,"description":"The set_debugreg 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 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