Bug 1402265 (CVE-2016-9907)

Summary:	CVE-2016-9907 Qemu: usb: redirector: memory leakage when destroying redirector
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	ailan, amit.shah, apevec, areis, ayoung, berrange, cfergeau, chrisw, crobinso, cvsbot-xmlrpc, drjones, dwmw2, gmollett, imammedo, itamar, jen, jjoyce, jschluet, kbasil, 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 03:03:32 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:	1402266, 1476049, 1476068, 1476069, 1476072, 1476074, 1476077
Bug Blocks:	1395985, 1476084

Description Prasad Pandit 2016-12-07 07:19:01 UTC

Quick Emulator(Qemu) built with the USB redirector usb-guest support is
vulnerable to a memory leakage flaw. It could occur while destroying the USB
redirector in 'usbredir_handle_destroy'.

A guest user/process could use this issue to leak host memory, resulting in
DoS for a host.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg01379.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/12/06/3

Comment 1 Prasad Pandit 2016-12-07 07:20:24 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1402266]

Comment 3 Cole Robinson 2017-01-16 18:42:58 UTC

commit 07b026fd82d6cf11baf7d7c603c4f5f6070b35bf
Author: Li Qiang <liqiang6-s>
Date:   Mon Nov 7 21:57:46 2016 -0800

    usbredir: free vm_change_state_handler in usbredir destroy dispatch

Comment 4 errata-xmlrpc 2017-08-02 00:58:27 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 04:47:17 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