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Bug 1388046 - (CVE-2016-8910) CVE-2016-8910 Qemu: net: rtl8139: infinite loop while transmit in C+ mode
CVE-2016-8910 Qemu: net: rtl8139: infinite loop while transmit in C+ mode
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20161021,reported=2...
: Security
Depends On: 1388047 1388048 1476049 1476068 1476069 1476072 1476074 1476077
Blocks: 1388028 1476084
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Reported: 2016-10-24 06:07 EDT by Prasad J Pandit
Modified: 2018-07-18 11:04 EDT (History)
37 users (show)

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:2392 normal SHIPPED_LIVE Important: qemu-kvm-rhev security, bug fix, and enhancement update 2017-08-01 16:04:36 EDT
Red Hat Product Errata RHSA-2017:2408 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security and bug fix update 2017-08-01 21:17:55 EDT

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Description Prasad J Pandit 2016-10-24 06:07:28 EDT 
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:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg05495.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/10/24/5
Comment 1 Prasad J Pandit 2016-10-24 06:09:22 EDT 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1388048]
Comment 2 Prasad J Pandit 2016-10-24 06:09:42 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1388047]
Comment 3 Prasad J Pandit 2016-10-24 15:13:39 EDT 
Acknowledgments:

Name: Andrew Henderson (Intelligent Automation Inc.)
Comment 4 Cole Robinson 2017-01-16 13:22:08 EST 
commit c7c35916692fe010fef25ac338443d3fe40be225
Author: Prasad J Pandit <pjp@fedoraproject.org>
Date:   Fri Oct 21 17:39:29 2016 +0530

    net: rtl8139: limit processing of ring descriptors
Comment 7 errata-xmlrpc 2017-08-01 20:57:45 EDT 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)
  Red Hat OpenStack Platform 11.0 (Ocata)
  Red Hat Enterprise Linux OpenStack Platform 6.0 (Juno) for RHEL 7
  Red Hat Enterprise Linux OpenStack Platform 7.0 (Kilo) for RHEL 7
  Red Hat OpenStack Platform 8.0 (Liberty)
  Red Hat OpenStack Platform 9.0 (Mitaka)

Via RHSA-2017:2408 https://access.redhat.com/errata/RHSA-2017:2408
Comment 8 errata-xmlrpc 2017-08-02 00:46:34 EDT 
This issue has been addressed in the following products:

  RHEV 4.X RHEV-H and Agents for RHEL-7

Via RHSA-2017:2392 https://access.redhat.com/errata/RHSA-2017:2392
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