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Bug 1347185

Summary:	Regression from CVE-2016-3712: windows installer fails to start
Product:	Red Hat Enterprise Linux 7	Reporter:	Marcel Kolaja <mkolaja>
Component:	qemu-kvm-rhev	Assignee:	Gerd Hoffmann <kraxel>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	unspecified	Docs Contact:
Priority:	high
Version:	7.2	CC:	areis, chayang, jherrman, juzhang, knoel, kraxel, mgoldboi, mrezanin, virt-maint, zhguo
Target Milestone:	rc	Keywords:	Regression, ZStream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-rhev-2.3.0-31.el7_2.16	Doc Type:	Bug Fix
Doc Text:	After applying the fix for security issue CVE-2016-3712, the installation of Windows 7 guests on Red Hat Enterprise Virtualization Hypervisor was not possible due to unmodifiable registers. This update introduces a new register set, sr_vbe, to be used instead of vga registers in Windows 7 guests. As a result, the vga registers no longer cause the guest installation to fail.	Story Points:	---
Clone Of:	1346976	Environment:
Last Closed:	2016-06-29 16:21:16 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:	1346976
Bug Blocks:

Description Marcel Kolaja 2016-06-16 09:23:17 UTC

This bug has been copied from bug #1346976 and has been proposed
to be backported to 7.2 z-stream (EUS).

Comment 4 Miroslav Rezanina 2016-06-16 10:36:23 UTC

Fix included in qemu-kvm-rhev-2.3.0-31.el7_2.16

Comment 6 Guo, Zhiyi 2016-06-20 09:42:06 UTC

Reproduced on 7.2.z host with
kernel: 3.10.0-327.22.2.el7.x86_64
qemu:qemu-kvm-rhev-2.3.0-31.el7_2.15.x86_64

Trying to install win7/win2008r2 guests, results:

iso:en_windows_7_ultimate_with_sp1_x86_dvd_u_677460.iso result: stuck at "starting windows"
iso:en_windows_7_ultimate_with_sp1_x64_dvd_u_677332.iso result: stuck at "starting windows" 
iso:en_windows_server_2008_r2_standard_enterprise_datacenter_and_web_with_sp1_x64_dvd_617601.iso result: stuck at "starting windows" 

Install win10 guests for comparing, win10 guests install and work well, isos used:
en_windows_10_enterprise_x64_dvd_6851151.iso
en_windows_10_enterprise_x86_dvd_6851156.iso

Verify against qemu-kvm-rhev-2.3.0-31.el7_2.16.x86_64

Both windows7/win2008r2 guests install and work well.
Install win10 guests for comparing, win10 guests install and work well also.

Comment 8 errata-xmlrpc 2016-06-29 16:21:16 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2016:1372