Bug 1023477 - (CVE-2013-4470) CVE-2013-4470 Kernel: net: memory corruption with UDP_CORK and UFO
CVE-2013-4470 Kernel: net: memory corruption with UDP_CORK and UFO
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20131021,repo...
: Security
Depends On: 1014599 1023490 1023491 1023492 1023493 1023494 1023495 1052129
Blocks: 1022007
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Reported: 2013-10-25 09:52 EDT by Prasad J Pandit
Modified: 2015-10-15 17:06 EDT (History)
33 users (show)

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Doc Type: Bug Fix
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Last Closed: 2014-01-28 13:35:29 EST
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Description Prasad J Pandit 2013-10-25 09:52:19 EDT
Linux kernel built with an Ethernet driver(ex virtio-net) which has UDP
Fragmentation Offload(UFO) feature ON is vulnerable to a memory corruption flaw
when UDP_CORK socket option is set. It could occur when sending large messages,
wherein not all messages are greater than maximum transfer unit(MTU) of the
underlying medium.

An unprivileged user/program could use this flaw to crash the kernel resulting in DoS, or potentially escalate their privileges on the system.


Upstream fix:
-------------
 -> http://patchwork.ozlabs.org/patch/285292/
 -> https://git.kernel.org/linus/c547dbf55d5f8cf615ccc0e7265e98db27d3fb8b
 -> https://git.kernel.org/linus/e93b7d748be887cd7639b113ba7d7ef792a7efb9
Comment 1 Prasad J Pandit 2013-10-25 09:55:19 EDT
Statement:

This issue does not affect the version of the kernel package as shipped with Red Hat Enterprise Linux 5.
Comment 2 Prasad J Pandit 2013-10-25 10:20:49 EDT
Acknowledgements:

Red Hat would like to thank Hannes Frederic Sowa for reporting this issue.
Comment 5 Prasad J Pandit 2013-10-25 10:32:15 EDT
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1023495]
Comment 8 Fedora Update System 2013-11-04 21:59:30 EST
kernel-3.11.6-201.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2013-11-10 02:57:03 EST
kernel-3.11.7-300.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2013-11-12 21:16:44 EST
kernel-3.11.7-100.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 11 errata-xmlrpc 2013-12-12 14:24:25 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:1801 https://rhn.redhat.com/errata/RHSA-2013-1801.html
Comment 14 errata-xmlrpc 2014-01-28 12:40:12 EST
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:0100 https://rhn.redhat.com/errata/RHSA-2014-0100.html
Comment 15 errata-xmlrpc 2014-03-11 13:07:56 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.4 EUS - Server and Compute Node Only

Via RHSA-2014:0284 https://rhn.redhat.com/errata/RHSA-2014-0284.html

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