Memory leak in the virgl_resource_attach_backing function in virglrenderer before 0.6.0 allows local guest OS users to cause a denial of service (memory consumption) via a large number of VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING commands.
https://security.gentoo.org/glsa/201707-06
https://lists.freedesktop.org/archives/virglrenderer-devel/2017-February/000145.html
https://cgit.freedesktop.org/virglrenderer/commit/?id=40b0e7813325b08077b6f541b3989edb2d86d837