Bug 1361427 (CVE-2016-6490)

Summary:	CVE-2016-6490 Qemu: virtio: infinite loop in virtqueue_pop
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit.shah, apevec, areis, ayoung, berrange, cfergeau, chrisw, 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 02:57:01 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:	1361428
Bug Blocks:	1360680

Description Prasad Pandit 2016-07-29 05:27:55 UTC

Quick emulator(Qemu) built with the virtio framework is vulnerable to an 
infinite loop issue. It could occur if the guest was to set the I/O descriptor 
buffer length to be zero. A privileged user inside guest could use this flaw 
to potentially crash the Qemu instance on the host resulting in DoS.

Upstream fix:
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   -> https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.html

Reference:
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   -> http://www.openwall.com/lists/oss-security/2016/07/28/4

Comment 1 Prasad Pandit 2016-07-29 05:28:24 UTC

Acknowledgments:

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad Pandit 2016-07-29 05:29:55 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1361428]