Denial of Service via Preemptibility Vulnerability in XEN_DOMCTL_memory_mapping Hypercall

CVE-2015-2752 · MEDIUM Severity

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

The XEN_DOMCTL_memory_mapping hypercall in Xen 3.2.x through 4.5.x, when using a PCI passthrough device, is not preemptible, which allows local x86 HVM domain users to cause a denial of service (host CPU consumption) via a crafted request to the device model (qemu-dm).

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