Bug 1318727

Summary:	qemu-kvm: Integer overflow in SDL when creating too wide screen
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
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, alonbl, apevec, areis, ayoung, bmcclain, chrisw, dallan, dblechte, drjones, eedri, gkotton, imammedo, jen, jschluet, knoel, lhh, lpeer, markmc, mgoldboi, michal.skrivanek, mkenneth, mrezanin, mst, pbonzini, ppandit, rbryant, rkrcmar, sclewis, security-response-team, srevivo, tdecacqu, vkuznets, ykaul
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 02:49:50 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:	1330512, 1330513
Bug Blocks:	1318730

Description Adam Mariš 2016-03-17 15:34:46 UTC

Qemu emulator built with the VGA emulator support is vulnerable to an integer overflow issue. It could occur while creating wide screen with large resolutions.

A privileged user inside guest could use this flaw to crash the Qemu instance on the host, resulting in DoS.

Upstream fix:
-------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-04/msg03799.html

Comment 1 Adam Mariš 2016-03-17 15:35:02 UTC

Acknowledgments:

Name: Zuozhi Fzz (Alibaba Inc.)

Comment 3 Prasad Pandit 2016-04-26 11:37:35 UTC

Statement:

This has been rated as having Low security impact and is not currently
planned to be addressed in future updates. For additional information, refer
to the Red Hat Enterprise Linux Life Cycle:
https://access.redhat.com/support/policy/updates/errata/.

Comment 4 Prasad Pandit 2016-04-26 11:47:26 UTC

Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1330513]

Comment 5 Prasad Pandit 2016-04-26 11:47:42 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1330512]

Comment 6 Fedora Update System 2016-05-12 07:26:52 UTC

xen-4.5.3-3.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2016-05-16 16:19:57 UTC

xen-4.6.1-8.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2016-05-28 23:21:55 UTC

xen-4.5.3-5.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.