CVE-2011-2512: Kvm Group Qemu-Kvm

Medium severity, CVSS 5.8. EPSS: 1.9% chance of exploitation in the next 30 days.

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.

Affected products

• Kvm Group Qemu-Kvm: up to and including 0.14.0; version 0.12 only

Published 2012-06-21. Last modified 2026-06-16.