Bug 1388052 (CVE-2016-8909)

Summary:	CVE-2016-8909 Qemu: audio: intel-hda: infinite loop in processing dma buffer stream
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:	ailan, amit.shah, aortega, apevec, areis, berrange, cfergeau, chrisw, crobinso, cvsbot-xmlrpc, drjones, dwmw2, gmollett, imammedo, itamar, jen, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbalakri, 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:	2018-01-16 10:25:44 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:	1388053, 1476049, 1476068, 1476069, 1476072, 1476074, 1476077
Bug Blocks:	1326713

Description Prasad Pandit 2016-10-24 10:23:46 UTC

Quick Emulator(Qemu) built with the Intel HDA controller emulation support
is vulnerable to an infinite loop issue. It could occur while processing the
DMA buffer stream while doing data transfer in 'intel_hda_xfer'.

A privileged user inside guest could use this flaw to consume excessive CPU
cycles on the host, resulting in DoS.

Upstream patch
--------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg04717.html

Comment 1 Prasad Pandit 2016-10-24 10:24:19 UTC

Acknowledgments:

Name: PSIRT  (Huawei Inc.)

Comment 2 Prasad Pandit 2016-10-24 10:25:27 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1388053]

Comment 3 Cole Robinson 2017-01-16 18:21:33 UTC

commit 0c0fc2b5fd534786051889459848764edd798050
Author: Prasad J Pandit <pjp>
Date:   Thu Oct 20 13:10:24 2016 +0530

    audio: intel-hda: check stream entry count during transfer

Comment 4 errata-xmlrpc 2017-08-02 00:58:03 UTC

This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)
  Red Hat OpenStack Platform 11.0 (Ocata)
  Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
  Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7
  Red Hat OpenStack Platform 8.0 (Liberty)
  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2017:2408 https://access.redhat.com/errata/RHSA-2017:2408

Comment 5 errata-xmlrpc 2017-08-02 04:46:56 UTC

This issue has been addressed in the following products:

  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2017:2392 https://access.redhat.com/errata/RHSA-2017:2392