Bug 570528 (CVE-2010-0435)

Summary: CVE-2010-0435 kvm: vmx null pointer dereference
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: alexl, apevec, arozansk, davej, ehabkost, gleb, iheim, jrb, kmcmartin, knoel, kraxel, lihuang, lwang, mtosatti, ndai, plyons, sct, security-response-team, tburke, tcallawa
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2012-03-28 08:41:05 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: 570531, 570532, 570533, 570534    
Bug Blocks:    

Description Petr Matousek 2010-03-04 16:21:46 UTC 
Gleb Napatov found a bug in KVM that can be used to crash the host on Intel
machines. If emulator is tricked into emulating mov to/from DR instruction it
causes NULL pointer dereference on VMX since kvm_x86_ops->(set|get)_dr are not
initialized. Recently this is not exploitable from guest userspace, but
malicious guest kernel can trigger it easily.
Comment 6 errata-xmlrpc 2010-08-19 21:31:52 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2010:0627 https://rhn.redhat.com/errata/RHSA-2010-0627.html
Comment 7 errata-xmlrpc 2010-08-19 21:45:39 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Virtualization for RHEL-5

Via RHSA-2010:0622 https://rhn.redhat.com/errata/RHSA-2010-0622.html