CVE-2016-8667: Divide by Zero
First published: Fri Nov 04 2016(Updated: )
The rc4030_write function in hw/dma/rc4030.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (divide-by-zero error and QEMU process crash) via a large interval timer reload value.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU | <=2.8.1.1 | |
| QEMU | =2.9.0-rc0 | |
| SUSE Linux | =42.2 | |
| Debian | =8.0 |
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Reference Links
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
- http://www.openwall.com/lists/oss-security/2016/10/14/6
- http://www.openwall.com/lists/oss-security/2016/10/15/4
- http://www.securityfocus.com/bid/93567
- https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02577.html
Frequently Asked Questions
What is the severity of CVE-2016-8667?
CVE-2016-8667 is classified as a medium-severity vulnerability because it allows denial of service through a divide-by-zero error resulting in QEMU crash.
How do I fix CVE-2016-8667?
To fix CVE-2016-8667, you should update QEMU to version 2.9.0 or later, or apply any patches provided by your operating system vendor.
Who is affected by CVE-2016-8667?
CVE-2016-8667 affects local guest OS administrators running QEMU versions up to 2.8.1.1 and 2.9.0 release candidate.
What systems are impacted by CVE-2016-8667?
Systems impacted by CVE-2016-8667 include QEMU KVM on various platforms, as well as openSUSE and Debian versions mentioned in the vulnerability report.
What type of attack is associated with CVE-2016-8667?
The attack associated with CVE-2016-8667 can be described as a denial-of-service attack due to the exploitation of a divide-by-zero error.
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