CVE-2016-9921

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.

• CWE-369

• 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

Published

Dec 23, 2016

Last Modified

Jun 17, 2026

Status

Modified

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