Bug 713589 (CVE-2011-2212) - CVE-2011-2212 qemu-kvm: virtqueue: too-large indirect descriptor buffer overflow
Summary: CVE-2011-2212 qemu-kvm: virtqueue: too-large indirect descriptor buffer overflow
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-2212
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 713592 713593 713594 713595 713597
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-15 20:45 UTC by Petr Matousek
Modified: 2021-02-24 15:15 UTC (History)
20 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2012-05-31 07:46:08 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2011:0919 0 normal SHIPPED_LIVE Important: qemu-kvm security and bug fix update 2011-07-05 18:07:54 UTC

Description Petr Matousek 2011-06-15 20:45:48 UTC 
It was found that virtio subsystem in qemu-kvm did not properly validate virtqueue in and out requests from the guest. A privileged guest user could use this flaw to cause buffer overflow, causing the guest to crash (denial of service) or, possibly, resulting in the privileged guest user escalating their privileges on the host.

Acknowledgements:                                                               

Red Hat would like to thank Nelson Elhage for reporting this issue.
Comment 11 Petr Matousek 2011-06-20 12:58:22 UTC 
Statement:

This issue only affects Red Hat Enterprise Linux 6. The version of the qemu/kvm
as shipped with Red Hat Enterprise Linux 5 is not affected because it does not provide support for indirect descriptors.
Comment 12 errata-xmlrpc 2011-07-05 18:08:00 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0919 https://rhn.redhat.com/errata/RHSA-2011-0919.html
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