CVE-2016-4952

Name: CVE-2016-4952
Creator: NVD / NIST
Published: 2016-09-02T14:59:01.33+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2016-4952 is a medium-severity vulnerability rated 6/10 on the CVSS scale. QEMU (aka Quick Emulator), when built with VMWARE PVSCSI paravirtual SCSI bus emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds array access) via vectors related to the (1) PVSCSI_CMD_SETUP_RINGS or (2) PVSCSI_CMD_SETUP_MSG_RING SCSI command.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

QEMU (aka Quick Emulator), when built with VMWARE PVSCSI paravirtual SCSI bus emulation support, allows local guest OS administrators to cause a denial of service (out-of-bounds array access) via vectors related to the (1) PVSCSI_CMD_SETUP_RINGS or (2) PVSCSI_CMD_SETUP_MSG_RING SCSI command.

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

0.37%

28.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Qemu	Qemu	<= 2.6.2
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Debian	Debian Linux	8.0

References

http://www.openwall.com/lists/oss-security/2016/05/23/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/23/4Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-3047-1Third Party Advisory
http://www.ubuntu.com/usn/USN-3047-2Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1334384Issue Tracking, 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/2016-05/msg03774.htmlMailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/23/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/23/4Mailing List, Third Party Advisory
http://www.ubuntu.com/usn/USN-3047-1Third Party Advisory
http://www.ubuntu.com/usn/USN-3047-2Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1334384Issue Tracking, 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/2016-05/msg03774.htmlMailing List, Patch, Third Party Advisory

Timeline

Published: Sep 2, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-4952?

How severe is CVE-2016-4952?

CVE-2016-4952 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2016-4952?

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-2016-4952?

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

Scan your code now

Source: NVD / NIST