Xen 4.6.x and earlier does not properly enforce limits on page order inputs for the (1) XENMEMincreasereservation, (2) XENMEMpopulatephysmap, (3) XENMEMexchange, and possibly other HYPERVISORmemory_op suboperations, which allows ARM guest OS administrators to cause a denial of service (CPU consumption, guest reboot, or watchdog timeout and host reboot) and possibly have unspecified other impact via unknown vectors.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "libxen-4.4", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxen-4.4-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxen-dev", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxen-ocaml", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxen-ocaml-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxen-ocaml-dev", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxenstore3.0", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "libxenstore3.0-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-hypervisor-4.1-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-hypervisor-4.3-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-hypervisor-4.3-armhf", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-hypervisor-4.4-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-hypervisor-4.4-arm64", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-hypervisor-4.4-armhf", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-system-amd64", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-system-arm64", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-system-armhf", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-utils-4.4", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-utils-4.4-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xen-utils-common", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xenstore-utils", "binary_version": "4.4.2-0ubuntu0.14.04.4" }, { "binary_name": "xenstore-utils-dbgsym", "binary_version": "4.4.2-0ubuntu0.14.04.4" } ] }