CVE-2016-9921: Divide by Zero
First published: Mon May 09 2016(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU qemu | <=2.7.1 | |
| QEMU qemu | =2.8.0-rc0 | |
| QEMU qemu | =2.8.0-rc1 | |
| QEMU qemu | =2.8.0-rc2 | |
| Debian Debian Linux | =8.0 | |
| Redhat Openstack | =6.0 | |
| Redhat Openstack | =7.0 | |
| Redhat Openstack | =8 | |
| Redhat Openstack | =9 | |
| Redhat Openstack | =10 | |
| Redhat Openstack | =11 | |
| Redhat Virtualization | =4.0 | |
| Redhat Enterprise Linux | =7.0 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2016/12/09/1
- http://www.securityfocus.com/bid/94803
- https://access.redhat.com/errata/RHSA-2017:2392
- https://access.redhat.com/errata/RHSA-2017:2408
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://security.gentoo.org/glsa/201701-49
- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg03968.html
- http://www.openwall.com/lists/oss-security/2016/12/08/9
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1399055
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1399054
- https://bugzilla.redhat.com/show_bug.cgi?id=1334398
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2016-9921
- agent/tags
- agent/remedy
- agent/severity
- agent/author
- agent/references
- agent/weakness
- agent/description
- agent/event
- collector/mitre-cve
- source/MITRE
- vendor/qemu
- canonical/qemu qemu
- version/qemu qemu/2.7.1
- version/qemu qemu/2.8.0-rc0
- version/qemu qemu/2.8.0-rc1
- version/qemu qemu/2.8.0-rc2
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- vendor/redhat
- canonical/redhat openstack
- version/redhat openstack/6.0
- version/redhat openstack/7.0
- version/redhat openstack/8
- version/redhat openstack/9
- version/redhat openstack/10
- version/redhat openstack/11
- canonical/redhat virtualization
- version/redhat virtualization/4.0
- canonical/redhat enterprise linux
- version/redhat enterprise linux/7.0