K63771715 : Linux kernel vulnerability CVE-2017-7261

Security Advisory Description

The vmw_surface_define_ioctl function in drivers/gpu/drm/vmwgfx/vmwgfx_surface.c in the Linux kernel through 4.10.5 does not check for a zero value of certain levels data, which allows local users to cause a denial of service (ZERO_SIZE_PTR dereference, and GPF and possibly panic) via a crafted ioctl call for a /dev/dri/renderD* device. (CVE-2017-7261)
Impact
This vulnerability may allow locally authenticated users to cause a denial of service (DoS). This vulnerability is considered local, as it is exploitable only by an authenticated user accessing the system using the command line.