Xen XEN_DOMCTL_memory_mapping hypercall local denial of service vulnerability

Xen is a virtualization technology for the Linux kernel that allows multiple operating systems to run simultaneously. A security vulnerability in Xen XENDOMCTLmemorymapping hypercall allows local X86 HVM domain users to conduct denial-of-service attacks via special device model requests when usin...

PT-2015-5868

Name of the Vulnerable Software and Affected Versions Xen versions 3.2.x through 4.5.x Description The issue concerns the XEN DOMCTL memory mapping hypercall in Xen, which is not preemptible when using a PCI passthrough device. This could allow local users of the x86 HVM domain to cause a denial ...