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Bug 526837 - KVM: x86: verify MTRR/PAT validity (upstream backport)
KVM: x86: verify MTRR/PAT validity (upstream backport)
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kvm (Show other bugs)
5.4.z
All Linux
high Severity medium
: rc
: ---
Assigned To: Eduardo Habkost
Lawrence Lim
: ZStream
Depends On:
Blocks: 552520
  Show dependency tree / graph
 
Reported: 2009-10-01 20:00 EDT by Marcelo Tosatti
Modified: 2014-03-25 21:02 EDT (History)
6 users (show)

See Also:
Fixed In Version: kvm-83-124.el5
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2010-03-30 03:53:17 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
KVM-verify-MTRR-validity.patch (1.58 KB, text/plain)
2009-10-01 20:00 EDT, Marcelo Tosatti 		no flags Details
Add an attachment (proposed patch, testcase, etc.)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0271 normal SHIPPED_LIVE Important: kvm security, bug fix and enhancement update 2010-03-29 09:19:48 EDT

  None (edit)
Description Marcelo Tosatti 2009-10-01 20:00:04 EDT 
Created attachment 363407 [details]
KVM-verify-MTRR-validity.patch

Do not allow invalid memory types in MTRR/PAT (generating a #GP
otherwise).

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
(cherry picked from commit d6289b9365c3f622a8cfe62c4fb054bb70b5061a)

This is important to avoid guests running random code to possibly store (and later use) a random MTRR type.
Comment 14 errata-xmlrpc 2010-03-30 03:53:17 EDT 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2010-0271.html
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