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Bug 1402255 - (CVE-2016-9846) CVE-2016-9846 Qemu: display: virtio-gpu: memory leakage while updating cursor data
CVE-2016-9846 Qemu: display: virtio-gpu: memory leakage while updating cursor...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20161101,reported=2...
: Security
Depends On: 1402258
Blocks: 1395985
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Reported: 2016-12-07 01:53 EST by Prasad J Pandit
Modified: 2018-07-18 11:07 EDT (History)
36 users (show)

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Description Prasad J Pandit 2016-12-07 01:53:30 EST 
Quick Emulator(Qemu) 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

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/12/05/23
Comment 1 Prasad J Pandit 2016-12-07 01:59:01 EST 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1402258]
Comment 3 Cole Robinson 2017-01-16 13:49:55 EST 
commit 2d1cd6c7a91a4beb99a0c3a21be529222a708545
Author: Li Qiang <liqiang6-s@360.cn>
Date:   Tue Nov 1 04:06:58 2016 -0700

    virtio-gpu: fix memory leak in update_cursor_data_virgl
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