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
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-8669
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: 1384910 1384911 1476049 1476068 1476069 1476072 1476074 1476077
Blocks: 1384776 1476084
TreeView+ depends on / blocked
 
Reported: 2016-10-14 11:01 UTC by Prasad Pandit
Modified: 2021-02-17 03:11 UTC (History)
37 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-08 03:00:13 UTC

Attachments (Terms of Use)


Links
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 2016-10-14 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 Pandit 2016-10-14 11:02:06 UTC 
Acknowledgments:

Name: PSIRT  (Huawei Inc.)
Comment 2 Prasad Pandit 2016-10-14 11:03:22 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1384910]
Comment 3 Prasad 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>
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
Note You need to log in before you can comment on or make changes to this bug.