Bug 716805 - (CVE-2011-2497) CVE-2011-2497 kernel: bluetooth: buffer overflow in l2cap config request
CVE-2011-2497 kernel: bluetooth: buffer overflow in l2cap config request
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=20110624,reported=20110627,sou...
: Security
Depends On: 716809 716810 716811 748664
Blocks: 716800
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Reported: 2011-06-27 03:19 EDT by Eugene Teo (Security Response)
Modified: 2015-07-31 02:41 EDT (History)
19 users (show)

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Doc Type: Bug Fix
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Last Closed: 2012-05-10 04:11:14 EDT
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Description Eugene Teo (Security Response) 2011-06-27 03:19:49 EDT
Buffer overflow in bluetooth's l2cap config request.

http://marc.info/?l=linux-kernel&m=130891911909436&w=2
"A remote user can provide a small value for the command size field in the command header of an l2cap configuration request, resulting in an integer underflow when subtracting the size of the configuration request header.  This results in copying a very large amount of data via memcpy() and destroying the kernel heap.  Check for underflow."

Acknowledgements:

Red Hat would like to thank Dan Rosenberg for reporting this issue.
Comment 3 Eugene Teo (Security Response) 2011-06-27 03:42:09 EDT
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 5dee9e7c that introduced this issue. This has been addressed in Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG via https://rhn.redhat.com/errata/RHSA-2011-1189.html, and https://rhn.redhat.com/errata/RHSA-2011-1253.html.
Comment 4 Jiri Pirko 2011-07-13 05:10:54 EDT
net-2.6 7ac28817536797fd40e9646452183606f9e17f71
Comment 5 Eugene Teo (Security Response) 2011-07-27 05:15:34 EDT
(In reply to comment #4)
> net-2.6 7ac28817536797fd40e9646452183606f9e17f71

linux-2.6 7ac28817536797fd40e9646452183606f9e17f71
Comment 6 errata-xmlrpc 2011-08-23 10:42:05 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2011:1189 https://rhn.redhat.com/errata/RHSA-2011-1189.html
Comment 7 errata-xmlrpc 2011-09-12 15:44:35 EDT
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2011:1253 https://rhn.redhat.com/errata/RHSA-2011-1253.html
Comment 8 Eugene Teo (Security Response) 2011-10-24 23:25:02 EDT
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 748664]

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