Bug 1339155 (CVE-2016-4964)

Summary:	CVE-2016-4964 Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests
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:	abaron, ailan, amit.shah, apevec, areis, ayoung, berrange, cfergeau, chrisw, drjones, dwmw2, imammedo, itamar, jen, jschluet, 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 02:52:38 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:	1339157
Bug Blocks:	1339119

Description Prasad Pandit 2016-05-24 09:16:13 UTC

Quick Emulator(Qemu) built with the LSI SAS1068 Host Bus Adapter emulation
support is vulnerable to an infinite loop issue. It could occur while fetching
new requests in mptsas_fetch_requests().

A privileged user inside guest could use this flaw to consume excessive host
resources or crash the Qemu process resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg04027.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/05/24/4

Comment 1 Prasad Pandit 2016-05-24 09:17:30 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1339157]

Comment 2 Prasad Pandit 2016-05-24 12:30:46 UTC

Acknowledgments:

Name: Li Qiang (Qihoo 360 Inc.)

Comment 3 Andrej Nemec 2016-05-24 14:08:56 UTC

CVE assignment via:

http://seclists.org/oss-sec/2016/q2/399

Comment 4 Fedora Update System 2016-06-25 19:24:13 UTC

qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.