CVE-2016-7422

Name: CVE-2016-7422
Creator: NVD / NIST
Published: 2016-12-10T00:59:18.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.36%

Last modified Jun 17, 2026

CVE-2016-7422 is a medium-severity vulnerability rated 6/10 on the CVSS scale. The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via a large I/O descriptor buffer length value.

Metrics

CVSS 3.1

6/10

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

EPSS Probability

0.36%

28.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 2.7.1
Opensuse	Leap	42.2
Redhat	Openstack	6.0
Redhat	Openstack	7.0
Redhat	Openstack	8
Redhat	Openstack	9
Redhat	Openstack	10
Redhat	Openstack	11
Redhat	Virtualization	4.0

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=973e7170dddefb491a48df5cba33b2ae151013a0
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/16/10Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/16/4Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/92996Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2392Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.htmlPatch, Third Party Advisory
https://security.gentoo.org/glsa/201609-01Third Party Advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=973e7170dddefb491a48df5cba33b2ae151013a0
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/16/10Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/09/16/4Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/92996Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2017:2392Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03546.htmlPatch, Third Party Advisory
https://security.gentoo.org/glsa/201609-01Third Party Advisory

Timeline

Published: Dec 10, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-7422?

How severe is CVE-2016-7422?

CVE-2016-7422 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.

How do I fix CVE-2016-7422?

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-2016-7422?

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

Scan your code now

Source: NVD / NIST