Bug 1389538 (CVE-2016-9101)

Summary:	CVE-2016-9101 Qemu: net: eepro100 memory leakage at device unplug
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit.shah, apevec, areis, ayoung, berrange, cfergeau, chrisw, crobinso, cvsbot-xmlrpc, drjones, dwmw2, imammedo, itamar, jen, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, sclewis, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:01:28 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1389539
Bug Blocks:	1389512

Description Prasad Pandit 2016-10-27 20:18:22 UTC

Quick Emulator(Qemu) built with the i8255x (PRO100) NIC emulation support
is vulnerable to a memory leakage issue. It could occur while unplugging the
device, and doing so repeatedly would result in leaking host memory affecting,
other services on the host.

A privileged user inside guest could use this flaw to cause a DoS on the host
and/or potentially crash the Qemu process on the host.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg03024.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/10/27/14

Comment 1 Prasad Pandit 2016-10-27 20:18:55 UTC

Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad Pandit 2016-10-27 20:19:56 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1389539]

Comment 3 Andrej Nemec 2016-10-31 14:41:59 UTC

CVE assignment:

http://seclists.org/oss-sec/2016/q4/277

Comment 4 Cole Robinson 2017-01-16 18:25:49 UTC

Not the referenced qemu-devel patch, but I think this was the fix:

commit 2634ab7fe29b3f75d0865b719caf8f310d634aae
Author: Li Qiang <liqiang6-s>
Date:   Sat Oct 8 05:07:25 2016 -0700

    net: eepro100: fix memory leak in device uninit