Bug 1500751

Summary:	Qemu: I/O: potential memory exhaustion via websock channel
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit, apevec, areis, berrange, cfergeau, chrisw, drjones, dwmw2, imammedo, itamar, jen, jforbes, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mburns, mkenneth, mrezanin, mst, pbonzini, rbalakri, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, slinaber, 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:	2017-10-11 12:11:13 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:
Bug Blocks:	1496886

Description Prasad Pandit 2017-10-11 12:08:03 UTC

Quick Emulator(Qemu) built with the I/O channels websockets support is
vulnerable to a memory leakage issue. It could occur while sending screen
updates to a client, which is slow to read and process them further.

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

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg02278.html

Reference:
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  -> https://bugs.launchpad.net/qemu/+bug/1718964

Comment 1 Prasad Pandit 2017-10-11 12:11:13 UTC


*** This bug has been marked as a duplicate of bug 1496879 ***