Bug 1384909 (CVE-2016-8669) - CVE-2016-8669 Qemu: char: divide by zero error in serial_update_parameters
Summary: CVE-2016-8669 Qemu: char: divide by zero error in serial_update_parameters
Status: NEW
Alias: CVE-2016-8669
Product: Security Response
Classification: Other
Component: vulnerability   
(Show other bugs)
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=low,public=20161012,reported=2...
Keywords: Security
Depends On: 1384910 1384911 1476049 1476068 1476069 1476072 1476074 1476077
Blocks: 1384776 1476084
TreeView+ depends on / blocked
 
Reported: 2016-10-14 11:01 UTC by Prasad J Pandit
Modified: 2018-07-18 15:03 UTC (History)
37 users (show)

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RHEL 7.3 requirements from Atomic Host:
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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 20:04:36 UTC
Red Hat Product Errata RHSA-2017:2408 normal SHIPPED_LIVE Moderate: qemu-kvm-rhev security and bug fix update 2017-08-02 01:17:55 UTC

Description Prasad J Pandit 2016-10-14 11:01:30 UTC
Quick Emulator(Qemu) built with the 16550A UART emulation support is vulnerable
to a divide by zero issue. It could occur while updating serial device
parameters in 'serial_update_parameters'.

A privileged guest user could use this flaw to crash the Qemu process instance
on the host, resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02461.html

Comment 1 Prasad J Pandit 2016-10-14 11:02:06 UTC
Acknowledgments:

Name: PSIRT  (Huawei Inc.)

Comment 2 Prasad J Pandit 2016-10-14 11:03:22 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1384910]

Comment 3 Prasad J Pandit 2016-10-14 11:03:46 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1384911]

Comment 4 Andrej Nemec 2016-10-17 07:48:50 UTC
CVE assignment:

http://seclists.org/oss-sec/2016/q4/137

Comment 5 Cole Robinson 2017-01-16 18:22:34 UTC
commit 3592fe0c919cf27a81d8e9f9b4f269553418bb01
Author: Prasad J Pandit <pjp@fedoraproject.org>
Date:   Wed Oct 12 11:28:08 2016 +0530

    char: serial: check divider value against baud base

Comment 6 errata-xmlrpc 2017-08-02 00:57:25 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 7 errata-xmlrpc 2017-08-02 04:46:14 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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