CVE-2016-9921

MediumCVSS 6.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Weakness enumeration

CWE-369

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://www.openwall.com/lists/oss-security/2016/12/09/1Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/94803Third 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.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201701-49Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/12/09/1Mailing List, Patch, Third Party Advisory
http://www.securityfocus.com/bid/94803Third 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.debian.org/debian-lts-announce/2018/09/msg00007.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/201701-49Third Party Advisory

Timeline

Published: Dec 23, 2016
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2016

CVE-2016-99225.5The cirrus_do_copy function in hw/display/cirrus_vga.c in QEMU (aka Quick Emulator), when cirrus graphics mode is VGA, allows local guest OS CVE-2016-99235.5Quick Emulator (Qemu) built with the 'chardev' backend support is vulnerable to a use after free issue. It could occur while hotplug and unp CVE-2016-99249.8Zimbra Collaboration Suite (ZCS) before 8.7.4 allows remote attackers to conduct XML External Entity (XXE) attacks.CVE-2016-99287.4MCabber before 1.0.4 is vulnerable to roster push attacks, which allows remote attackers to intercept communications, or add themselves as a CVE-2016-99323.3CMPXCHG8B emulation in Xen 3.3.x through 4.7.x on x86 systems allows local HVM guest OS users to obtain sensitive information from host stac CVE-2016-99337.5Stack consumption vulnerability in the gdImageFillToBorder function in gd.c in the GD Graphics Library (aka libgd) before 2.2.2, as used in CVE-2016-99347.5ext/wddx/wddx.c in PHP before 5.6.28 and 7.x before 7.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) v CVE-2016-99359.8The php_wddx_push_element function in ext/wddx/wddx.c in PHP before 5.6.29 and 7.x before 7.0.14 allows remote attackers to cause a denial o CVE-2016-99369.8The unserialize implementation in ext/standard/var.c in PHP 7.x before 7.0.14 allows remote attackers to cause a denial of service (use-afte CVE-2016-99377.5An issue was discovered in Asterisk Open Source 13.12.x and 13.13.x before 13.13.1 and 14.x before 14.2.1. If an SDP offer or answer is rece CVE-2016-99385.3An issue was discovered in Asterisk Open Source 11.x before 11.25.1, 13.x before 13.13.1, and 14.x before 14.2.1 and Certified Asterisk 11.x CVE-2016-99397.5Crypto++ (aka cryptopp and libcrypto++) 5.6.4 contained a bug in its ASN.1 BER decoding routine. The library will allocate a memory block ba