CVE request Virglrenderer: OOB access while parsing texture instruction

[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 OOB array access issue. It could occur 
when parsing texture instructions in parse_instruction().

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

Upstream patch:
---------------
  -> https://lists.freedesktop.org/archives/virglrenderer-devel/2017-January/000105.html

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1415986

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

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F