CVE-2016-9921

MEDIUM

Qemu < 2.7.1 - Denial of Service via Cirrus VGA Emulator Divide By Zero

Title source: llm
STIX 2.1

Description

Quick emulator (Qemu) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to a divide by zero issue. It could occur while copying VGA data when cirrus graphics mode was set to be VGA. A privileged user inside guest could use this flaw to crash the Qemu process instance on the host, resulting in DoS.

References (6)

Core 6
Core References
Mailing List, Patch, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/12/09/1
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2392
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201701-49
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/94803
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2017:2408

Scores

CVSS v3 6.5
EPSS 0.0010
EPSS Percentile 27.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Details

CWE
CWE-369
Status published
Products (10)
debian/debian_linux 8.0
qemu/qemu 2.8.0 rc0 (3 CPE variants)
qemu/qemu < 2.7.1
redhat/openstack 6.0
redhat/openstack 7.0
redhat/openstack 8
redhat/openstack 9
redhat/openstack 10
redhat/openstack 11
redhat/virtualization 4.0
Published Dec 23, 2016
Tracked Since Feb 18, 2026