Bug 1388046 (CVE-2016-8910) - CVE-2016-8910 Qemu: net: rtl8139: infinite loop while transmit in C+ mode
Summary: CVE-2016-8910 Qemu: net: rtl8139: infinite loop while transmit in C+ mode
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-8910
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1388047 1388048 1476049 1476068 1476069 1476072 1476074 1476077
Blocks: 1388028 1476084
TreeView+ depends on / blocked
 
Reported: 2016-10-24 10:07 UTC by Prasad Pandit
Modified: 2021-02-17 03:08 UTC (History)
37 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2019-06-08 03:00:47 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:2392 0 normal SHIPPED_LIVE Important: qemu-kvm-rhev security, bug fix, and enhancement update 2017-08-01 20:04:36 UTC
Red Hat Product Errata RHSA-2017:2408 0 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security and bug fix update 2017-08-02 01:17:55 UTC

Description Prasad Pandit 2016-10-24 10:07:28 UTC 
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:
----------
  -> http://www.openwall.com/lists/oss-security/2016/10/24/5
Comment 1 Prasad Pandit 2016-10-24 10:09:22 UTC 
Created xen tracking bugs for this issue:

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

Affects: fedora-all [bug 1388047]
Comment 3 Prasad Pandit 2016-10-24 19:13:39 UTC 
Acknowledgments:

Name: Andrew Henderson (Intelligent Automation Inc.)
Comment 4 Cole Robinson 2017-01-16 18:22:08 UTC 
commit c7c35916692fe010fef25ac338443d3fe40be225
Author: Prasad J Pandit <pjp>
Date:   Fri Oct 21 17:39:29 2016 +0530

    net: rtl8139: limit processing of ring descriptors
Comment 7 errata-xmlrpc 2017-08-02 00:57:45 UTC 
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 04:46:34 UTC 
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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