CVE-2016-2391

Name: CVE-2016-2391
Creator: NVD / NIST
Published: 2016-06-16T18:59:03.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2016-2391 is a medium-severity vulnerability rated 5/10 on the CVSS scale. 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.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.40%

31.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 2.5.1.1
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	15.10
Canonical	Ubuntu Linux	16.04
Debian	Debian Linux	8.0

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360
http://www.openwall.com/lists/oss-security/2016/02/16/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/83263Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2974-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1304794Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.htmlPatch, Third Party Advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=fa1298c2d623522eda7b4f1f721fcb935abb7360
http://www.openwall.com/lists/oss-security/2016/02/16/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/83263Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2974-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1304794Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List, Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.htmlPatch, Third Party Advisory

Timeline

Published: Jun 16, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-2391?

How severe is CVE-2016-2391?

CVE-2016-2391 has a CVSS score of 5/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2016-2391?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-2391?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST