Bug 572971 (CVE-2010-0730)

Summary: CVE-2010-0730 xen: emulator instruction decoding inconsistency
Product: [Other] Security Response Reporter: Petr Matousek <pmatouse>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: bressers, dhoward, jpirko, lwang, plyons, security-response-team, xen-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: 2011-04-05 19:59:48 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 572979, 572982    
Bug Blocks:    

Description Petr Matousek 2010-03-12 14:07:43 UTC
Paolo Bonzini found a bug in Xen hypervisor that can be used to crash the guest. Malicious guest userspace process can trick the hypervisor into emulating instruction that causes the crash if it has access to an MMIO region. The bug can be exploited because of an inconsistency between instruction decoding tables and the actual MMIO instruction decoder implementation.

Comment 14 Eugene Teo (Security Response) 2010-04-21 01:49:02 UTC
This issue does not affect upstream.

Comment 15 Petr Matousek 2010-04-27 16:27:19 UTC
This issue affects 32bit guests only.

Comment 18 Josh Bressers 2010-05-06 17:43:20 UTC
Lifting embargo

Comment 19 errata-xmlrpc 2010-05-06 18:49:48 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2010:0398 https://rhn.redhat.com/errata/RHSA-2010-0398.html

Comment 20 Jarod Wilson 2010-05-19 19:00:33 UTC
in kernel-2.6.18-199.el5
You can download this test kernel from http://people.redhat.com/jwilson/el5

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