CVE-2016-2391: Canonical Ubuntu Linux

Medium severity, CVSS 5.0. EPSS: 0.4% chance of exploitation in the next 30 days.

The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.10 only; version 16.04 only
• Debian Debian Linux: version 8.0 only
• Qemu Qemu: up to and including 2.5.1.1

Published 2016-06-16. Last modified 2026-06-17.