Public Date:
717399: CVE-2011-2512 qemu-kvm: OOB memory access caused by negative vq notifies

The MITRE CVE dictionary describes this issue as:

The virtio_queue_notify in qemu-kvm 0.14.0 and earlier does not properly validate the virtqueue number, which allows guest users to cause a denial of service (guest crash) and possibly execute arbitrary code via a negative number in the Queue Notify field of the Virtio Header, which bypasses a signed comparison.

Find out more about CVE-2011-2512 from the MITRE CVE dictionary dictionary and NIST NVD.


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.

CVSS v2 metrics

Base Score 6.5
Base Metrics AV:A/AC:H/Au:S/C:C/I:C/A:C
Access Vector Adjacent Network
Access Complexity High
Authentication Single
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (qemu-kvm) RHSA-2011:0919 2011-07-05

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kvm Not affected
Last Modified

CVE description copyright © 2017, The MITRE Corporation