CVE-2017-6317 Virglrenderer: memory leakage issue in add_shader_program

[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 a memory leakage issue. It could occur 
in case of an error in add_shader_program().

A guest user/process could use this flaw to leak host memory resulting in DoS.

Upstream patch:
---------------
  -> https://cgit.freedesktop.org/virglrenderer/commit/?id=a2f12a1b0f95b13b6f8dc3d05d7b74b4386394e4

Reference:
----------
  -> https://bugzilla.redhat.com/show_bug.cgi?id=1426756

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

'CVE-2017-6317' assigned via -> http://cveform.mitre.org/

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