Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling.
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "libxen-4.6" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "libxen-4.6-dbgsym" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "libxen-dev" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "libxenstore3.0" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "libxenstore3.0-dbgsym" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.4-amd64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.4-arm64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.4-armhf" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.5-amd64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.5-arm64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.5-armhf" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.6-amd64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.6-arm64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-hypervisor-4.6-armhf" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-system-amd64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-system-arm64" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-system-armhf" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-utils-4.6" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-utils-4.6-dbgsym" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xen-utils-common" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xenstore-utils" }, { "binary_version": "4.6.5-0ubuntu1.4", "binary_name": "xenstore-utils-dbgsym" } ] }