CVE-2015-2752 Information

Description

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).

Reference

http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154574.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/154579.html http://lists.fedoraproject.org/pipermail/package-announce/2015-April/155198.html http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00014.html http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00018.html http://www.securityfocus.com/bid/73448 http://www.securitytracker.com/id/1031994 http://xenbits.xen.org/xsa/advisory-125.html https://security.gentoo.org/glsa/201504-04