CVE-2017-9605

The vmwgbsurfacedefineioctl function accessible via DRMIOCTLVMWGBSURFACECREATE in drivers/gpu/drm/vmwgfx/vmwgfxsurface.c in the Linux kernel through 4.11.4 defines a backuphandle variable but does not give it an initial value. If one attempts to create a GB surface, with a previously allocated DM...