Bug 652508 - (CVE-2010-4165) CVE-2010-4165 kernel: possible kernel oops from user MSS
CVE-2010-4165 kernel: possible kernel oops from user MSS
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
public=20101110,reported=20101112,sou...
: Security
Depends On: 652509 652510 652511
Blocks:
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Reported: 2010-11-12 00:06 EST by Eugene Teo (Security Response)
Modified: 2015-07-29 09:18 EDT (History)
7 users (show)

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Doc Type: Bug Fix
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Last Closed: 2015-07-29 09:18:28 EDT
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Description Eugene Teo (Security Response) 2010-11-12 00:06:06 EST
With commit f5fff5dc8a7a3f395b0525c02ba92c95d42b7390, a user program
can pass in TCP_MAXSEG of 12 (or TCPOLEN_TSTAMP_ALIGNED), and cause
kernel oops with division by 0 in tcp_select_initial_window.

Proposed patch:
http://www.spinics.net/lists/netdev/msg146495.html

Reference:
http://www.spinics.net/lists/netdev/msg146405.html

Acknowledgements:

Red Hat would like to thank Steve Chen for reporting this issue.
Comment 3 Eugene Teo (Security Response) 2010-11-12 00:44:37 EST
Statement:

This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 4 and 5 as they did not backport the upstream commit that introduced the issue. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-0283.html and https://rhn.redhat.com/errata/RHSA-2011-0330.html.
Comment 4 Eugene Teo (Security Response) 2010-11-22 01:18:02 EST
Upstream commit:
http://git.kernel.org/linus/7a1abd08d52fdeddb3e9a5a33f2f15cc6a5674d2
Comment 5 errata-xmlrpc 2011-02-22 12:38:39 EST
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:0283 https://rhn.redhat.com/errata/RHSA-2011-0283.html
Comment 6 errata-xmlrpc 2011-03-10 15:04:33 EST
This issue has been addressed in following products:

  MRG for RHEL-5

Via RHSA-2011:0330 https://rhn.redhat.com/errata/RHSA-2011-0330.html

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