CVE-2017-6355 Virglrenderer: integer overflow while creating shader object

[P J P <ppandit () redhat com>]

  Hello,

Virgil 3d project, used by Quick Emulator(Qemu) to implement 3D GPU support 
for the virtio GPU, is vulnerable to an integer overflow issue. It could occur 
when creating a shader object in vrend_create_shader().

A guest user/process could use this flaw to crash the Qemu process resulting 
DoS.

Upstream patch:
---------------
  -> https://cgit.freedesktop.org/virglrenderer/commit/?id=93761787b29f37fa627dea9082cdfc1a1ec608d6

This issue was reported by Li Qiang of 360.cn Inc.

'CVE-2017-6355' assigned via -> http://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
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