64-bit Hypervisor Vulnerability: Denial of Service via Compatibility Mode Hypercall Argument Translation

CVE-2014-8866 · MEDIUM Severity

AV:L/AC:M/AU:N/C:N/I:N/A:C

The compatibility mode hypercall argument translation in Xen 3.3.x through 4.4.x, when running on a 64-bit hypervisor, allows local 32-bit HVM guests to cause a denial of service (host crash) via vectors involving altering the high halves of registers while in 64-bit mode.

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