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Bug 1384896 - (CVE-2016-8668) CVE-2016-8668 Qemu: net: OOB buffer access in rocker switch emulation
CVE-2016-8668 Qemu: net: OOB buffer access in rocker switch emulation
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=20161012,reported=2...
: Security
Depends On: 1384898
Blocks: 1384776
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Reported: 2016-10-14 06:47 EDT by Prasad J Pandit
Modified: 2018-07-18 11:03 EDT (History)
36 users (show)

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Description Prasad J Pandit 2016-10-14 06:47:32 EDT 
Quick Emulator(Qemu) built with the Rocker switch emulation support is
vulnerable to an OOB read access issue. It could occur while performing a DMA
access 'TEST_DMA_CTRL_INVERT' test.

A privileged guest user could use this issue to crash the Qemu process instance
on the host resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02501.html
Comment 1 Prasad J Pandit 2016-10-14 06:48:06 EDT 
Acknowledgments:

Name: PSIRT  (Huawei Inc.)
Comment 2 Prasad J Pandit 2016-10-14 06:50:29 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1384898]
Comment 3 Andrej Nemec 2016-10-17 03:45:57 EDT 
CVE assignment:

http://seclists.org/oss-sec/2016/q4/141
Comment 4 Cole Robinson 2017-01-16 13:18:52 EST 
commit 8caed3d564672e8bc6d2e4c6a35228afd01f4723
Author: Prasad J Pandit <pjp@fedoraproject.org>
Date:   Wed Oct 12 14:40:55 2016 +0530

    net: rocker: set limit to DMA buffer size
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