[CVE-2017-7346][T/X/Y/Z/A SRU] drm/vmwgfx: limit the number of mip levels in vmw_gb_surface_define_ioctl()

[Seth Forshee]

On Wed, Jun 14, 2017 at 05:09:33PM +0800, Po-Hsu Lin wrote:
> This upstream patch can be cherry-picked for X/Y/Z/A.
> 
> For Trusty, there are several lines have been changed in other commits (294adf7, 233826a7 and 53c1e53), so I ended up just backporting the change in this upstream patch.
> 
> Both Precise-ESM and Vivid are skipped as this is a medium CVE.

This was included in the 4.11.5 stable update, which I applied to
artful/master-next just a few minutes ago.