Bug 570528 - (CVE-2010-0435) CVE-2010-0435 kvm: vmx null pointer dereference
CVE-2010-0435 kvm: vmx null pointer dereference
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
public=20100819,reported=20100304,sou...
: Security
Depends On: 570531 570532 570533 570534
Blocks:
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Reported: 2010-03-04 11:21 EST by Petr Matousek
Modified: 2016-04-26 09:27 EDT (History)
20 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-03-28 04:41:05 EDT
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Description Petr Matousek 2010-03-04 11:21:46 EST
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 17:31:52 EDT
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 17:45:39 EDT
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

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