Bug 1112271 (CVE-2014-3471)

Summary:	CVE-2014-3471 Qemu: hw: pci: use after free triggered via guest
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	amit.shah, areis, berrange, carnil, cfergeau, dwmw2, ehabkost, itamar, jrusnack, juzhang, knoel, marcel, mkenneth, mrezanin, mst, mtosatti, pbonzini, pmatouse, rbalakri, rjones, rpacheco, scottt.tw, stefanha, virt-maint, virt-maint
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:	2016-02-10 08:18:22 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:	1058321, 1112274, 1112532
Bug Blocks:	1102527

Description Prasad Pandit 2014-06-23 13:01:54 UTC

Qemu PCIe bus support is vulnerable to a use-after-free flaw. It could occur
via guest, when it tries to hotplug/hotunplug devices on the guest.

A user able to add & delete Virtio block devices on a guest could use this
flaw to crash the Qemu instance resulting in DoS.

Upstream fix:
-------------
  -> git.qemu.org/?p=qemu.git;a=commit;h=554f802da3f8b09b16b9a84ad5847b2eb0e9ad2b

Comment 1 Prasad Pandit 2014-06-23 13:12:34 UTC

Statement:

This issue does not affect the versions of kvm package as shipped with Red Hat
Enterprise Linux 5.

This issue does not affect the versions of qemu-kvm package as shipped with Red Hat Enterprise Linux 6.

This issue does not affect the versions of qemu-kvm package as shipped with Red Hat Enterprise Linux 7.

Comment 2 Prasad Pandit 2014-06-23 13:15:02 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1112274]