Bug 706323 (CVE-2011-1936) - CVE-2011-1936 kernel: xen: vmx: insecure cpuid vmexit
Summary: CVE-2011-1936 kernel: xen: vmx: insecure cpuid vmexit
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-1936
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 706324 706325
Blocks: 718617
TreeView+ depends on / blocked
 
Reported: 2011-05-20 05:50 UTC by Petr Matousek
Modified: 2021-02-24 15:23 UTC (History)
12 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-07-29 12:47:23 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0927 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2011-07-15 06:07:56 UTC

Description Petr Matousek 2011-05-20 05:50:41 UTC 
A bug was found in the way Xen handles cpuid instruction emulation during VM exits. An unprivileged guest user can potentially use this flaw to crash the guest.

This issue only affects systems running on x86 architecture with Intel processor and VMX virtualization extension enabled.
Comment 2 Petr Matousek 2011-05-20 05:56:33 UTC 
Statement:

The versions of the Linux kernel as shipped with Red Hat Enterprise Linux 4, 6, and Red Hat Enterprise MRG are not affected. This has been addressed in Red Hat Enterprise Linux 5 via https://rhn.redhat.com/errata/RHSA-2011-0927.html.

Also, only systems running on x86 architecture with Intel processor and VMX
virtualization extension enabled are affected.
Comment 5 errata-xmlrpc 2011-07-15 06:09:23 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2011:0927 https://rhn.redhat.com/errata/RHSA-2011-0927.html
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