CVE-2016-8668
First published: Fri Nov 04 2016(Updated: )
The rocker_io_writel function in hw/net/rocker/rocker.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging failure to limit DMA buffer size.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU | <=2.7.1 | |
| SUSE Linux | =42.2 |
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Reference Links
- http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html
- http://www.openwall.com/lists/oss-security/2016/10/14/8
- http://www.openwall.com/lists/oss-security/2016/10/15/9
- http://www.securityfocus.com/bid/93566
- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02501.html
- https://security.gentoo.org/glsa/201611-11
Frequently Asked Questions
What is the severity of CVE-2016-8668?
CVE-2016-8668 has been classified as a high severity vulnerability due to its potential to cause denial of service.
How do I fix CVE-2016-8668?
To mitigate CVE-2016-8668, update QEMU to a version later than 2.7.1 or apply any available patches.
Who is affected by CVE-2016-8668?
CVE-2016-8668 affects local guest OS administrators using QEMU versions up to and including 2.7.1.
What is the nature of the vulnerability in CVE-2016-8668?
CVE-2016-8668 involves an out-of-bounds read vulnerability in the rocker_io_writel function that can lead to a QEMU process crash.
What kind of attack can exploit CVE-2016-8668?
An attacker can exploit CVE-2016-8668 by leveraging the improper handling of DMA buffer sizes to crash the QEMU process.
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