REDHAT-BUG-1388046
First published: Mon Oct 24 2016(Updated: )
Quick Emulator(Qemu) built with the RTL8139 ethernet controller emulation support is vulnerable to an infinite loop issue. It could occur while transmitting packets in C+ mode of operation. A privileged user inside guest could use this flaw to consume excessive CPU cycles on the host, resulting in DoS situation. Upstream patch: --------------- -> <a href="https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05495.html">https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05495.html</a> Reference: ---------- -> <a href="http://www.openwall.com/lists/oss-security/2016/10/24/5">http://www.openwall.com/lists/oss-security/2016/10/24/5</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU |
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Reference Links
- https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05495.html
- http://www.openwall.com/lists/oss-security/2016/10/24/5
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1388048
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1388047
- https://access.redhat.com/errata/RHSA-2017:2408
- https://access.redhat.com/errata/RHSA-2017:2392
- https://bugzilla.redhat.com/show_bug.cgi?id=1388046
Frequently Asked Questions
What is the severity of REDHAT-BUG-1388046?
The severity of REDHAT-BUG-1388046 is high due to the potential for a privileged user inside a guest to exploit it and consume excessive CPU cycles on the host.
How do I fix REDHAT-BUG-1388046?
To fix REDHAT-BUG-1388046, update to the latest version of QEMU that includes the patch for this vulnerability.
What are the potential impacts of REDHAT-BUG-1388046?
The potential impacts of REDHAT-BUG-1388046 include excessive CPU consumption on the host, leading to degraded performance of the virtualized environment.
Who is affected by REDHAT-BUG-1388046?
REDHAT-BUG-1388046 affects users of QEMU Quick Emulator that utilize the RTL8139 ethernet controller emulation.
Is exploitation of REDHAT-BUG-1388046 easy to accomplish?
Exploitation of REDHAT-BUG-1388046 requires a privileged user to be inside the guest, making it dependent on the guest's access level.
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2016-8910
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- agent/softwarecombine
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- agent/software-canonical-lookup-request
- vendor/qemu
- canonical/qemu