CVE-2016-2858

Name: CVE-2016-2858
Creator: NVD / NIST
Published: 2016-04-07T19:59:03.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2016-2858 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. QEMU, when built with the Pseudo Random Number Generator (PRNG) back-end support, allows local guest OS users to cause a denial of service (process crash) via an entropy request, which triggers arbitrary stack based allocation and memory corruption.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

QEMU, when built with the Pseudo Random Number Generator (PRNG) back-end support, allows local guest OS users to cause a denial of service (process crash) via an entropy request, which triggers arbitrary stack based allocation and memory corruption.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.40%

31.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-331

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=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956
http://www.openwall.com/lists/oss-security/2016/03/04/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/03/07/4Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/84134Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2974-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1314676Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201604-01Third Party Advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956
http://www.openwall.com/lists/oss-security/2016/03/04/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/03/07/4Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/84134Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-2974-1Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1314676Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201604-01Third Party Advisory

Timeline

Published: Apr 7, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-2858?

How severe is CVE-2016-2858?

CVE-2016-2858 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2016-2858?

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-2016-2858?

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

Scan your code now

Source: NVD / NIST