CVE request Qemu: display: virtio-gpu: memory leakage while updating cursor

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

  Hello,

Quick Emulator built with the Virtio GPU Device emulator support is vulnerable 
to a memory leakage issue. It could occur while updating the cursor data in 
update_cursor_data_virgl.

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

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg00029.html

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