The handle_mmio function in arch/x86/hvm/io.c in the MMIO operations
emulator for Xen 3.3 and 4.x, when running an HVM guest, does not
properly reset certain state information between emulation cycles,
which allows local guest OS users to cause a denial of service (guest
OS crash) via unspecified operations on MMIO regions.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[Xen-devel] 20120727 Xen Security Advisory 10 (CVE-2012-3432) - HVM user mode MMIO emul DoS
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