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Date: Mon, 5 Dec 2016 17:17:20 -0500
From: <cve-assign@...re.org>
To: <ppandit@...hat.com>
CC: <cve-assign@...re.org>, <oss-security@...ts.openwall.com>,
	<liq3ea@...il.com>
Subject: Re: CVE request Qemu: display: virtio-gpu: memory leakage while updating cursor

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

>> if the 'width'/ 'height'
>> is not equal to current cursor's width/height it will return
>> without free the 'data' allocated previously

Use CVE-2016-9846.

This is not yet available at
http://git.qemu.org/?p=qemu.git;a=history;f=hw/display/virtio-gpu.c but
that may be an expected place for a later update.

- -- 
CVE Assignment Team
M/S M300, 202 Burlington Road, Bedford, MA 01730 USA
[ A PGP key is available for encrypted communications at
  http://cve.mitre.org/cve/request_id.html ]
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