CVE-2016-5403: Canonical Ubuntu Linux

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

The virtqueue_pop function in hw/virtio/virtio.c in QEMU allows local guest OS administrators to cause a denial of service (memory consumption and QEMU process crash) by submitting requests without waiting for completion.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only
• Debian Debian Linux: version 8.0 only
• Oracle Linux: version 5 only; version 6 only; version 7 only
• Oracle Vm Server: version 3.4 only
• Qemu Qemu: up to and including 2.6.0; version 2.7.0 only
• Red Hat Enterprise Linux Desktop: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server Aus: version 7.2 only; version 7.3 only; version 7.4 only; version 7.5 only; version 7.6 only; version 7.7 only
• Red Hat Enterprise Linux Server Eus: version 7.2 only; version 7.3 only; version 7.4 only; version 7.5 only; version 7.6 only; version 7.7 only
• Red Hat Enterprise Linux Server Tus: version 7.2 only; version 7.3 only; version 7.6 only; version 7.7 only
• Red Hat Enterprise Linux Workstation: version 6.0 only; version 7.0 only
• Red Hat Openstack: version 5.0 only; version 6.0 only; version 7.0 only; version 8 only; version 9 only
• Red Hat Virtualization: version 3.0 only

Published 2016-08-02. Last modified 2026-06-17.