Divide By Zero Affecting qemu package, versions <2.0.0+dfsg-2ubuntu1.33
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Test your applications- Snyk ID SNYK-UBUNTU1404-QEMU-427293
- published 23 Dec 2016
- disclosed 23 Dec 2016
Introduced: 23 Dec 2016
CVE-2016-9921 Open this link in a new tabHow to fix?
Upgrade Ubuntu:14.04 qemu to version 2.0.0+dfsg-2ubuntu1.33 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Ubuntu.
See How to fix? for Ubuntu:14.04 relevant fixed versions and status.
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
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9921
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://security-tracker.debian.org/tracker/CVE-2016-9921
- https://security.gentoo.org/glsa/201701-49
- http://www.openwall.com/lists/oss-security/2016/12/09/1
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- http://www.securityfocus.com/bid/94803
- https://access.redhat.com/security/cve/CVE-2016-9921
- https://bugzilla.redhat.com/show_bug.cgi?id=1334398