Bug 696029 - (CVE-2011-1581) CVE-2011-1581 kernel: bonding: Incorrect TX queue offset
CVE-2011-1581 kernel: bonding: Incorrect TX queue offset
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
public=20110314,reported=20110413,sou...
: Security
Depends On: 695548 696030
Blocks:
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Reported: 2011-04-13 01:46 EDT by Eugene Teo (Security Response)
Modified: 2015-07-31 08:41 EDT (History)
9 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-03-28 04:42:54 EDT
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Description Eugene Teo (Security Response) 2011-04-13 01:46:23 EDT
Backport of upstream commit:
fd0e435b0fe85622f167b84432552885a4856ac8 bonding: Incorrect TX queue offset

By default bonding only allocates 16 queues.  This patch will prevent devices that have more than 16 receive queues (82599 has 128) from blowing out the tx queue index for the bonding device.

For proper queue allocation, in the bonding driver and down to the devices, they should probably add the following line to one of the files in /etc/modprobe.d/

options bonding tx_queues=N

where N>= number of processors that show up in /proc/cpuinfo.
Comment 3 Eugene Teo (Security Response) 2011-04-13 01:59:14 EDT
Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and Red Hat Enterprise MRG as they did not backport the upstream commit bb1d9123 that introduced this issue. A future kernel update in Red Hat Enterprise Linux 6 may address this flaw.
Comment 5 errata-xmlrpc 2011-05-19 07:58:37 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0542 https://rhn.redhat.com/errata/RHSA-2011-0542.html
Comment 6 errata-xmlrpc 2011-05-23 16:54:26 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0542 https://rhn.redhat.com/errata/RHSA-2011-0542.html

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