This service will be undergoing maintenance at 00:00 UTC, 2016-08-01. It is expected to last about 1 hours
Bug 833402 - (CVE-2012-2744) CVE-2012-2744 kernel: netfilter: null pointer dereference in nf_ct_frag6_reasm()
CVE-2012-2744 kernel: netfilter: null pointer dereference in nf_ct_frag6_reasm()
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
: ---
: ---
Assigned To: Red Hat Product Security
impact=important,public=20120710,repo...
: Security
Depends On: 833410 833412 833414 833415 833416
Blocks: 833442
  Show dependency treegraph
 
Reported: 2012-06-19 08:29 EDT by Petr Matousek
Modified: 2015-07-31 11:42 EDT (History)
15 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2013-08-24 08:19:09 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:


Attachments (Terms of Use)

  None (edit)
Description Petr Matousek 2012-06-19 08:29:52 EDT
A flaw was found in the way ipv6 netfilter's connection tracking module handled packets fragmented into a single fragment. A remote attacker could use this flaw to crash the system.

Upstream fix:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=9e2dcf72023d1447f09c47d77c99b0c49659e5ce

Acknowledgements:

Red Hat would like to thank Antonios Atlasis working with Beyond Security's SecuriTeam Secure Disclosure program for reporting this issue.
Comment 4 Petr Matousek 2012-07-04 01:51:53 EDT
Statement:

This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 as they did not include support for netfilter's ipv6 connection tracking module. This issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux MRG as they already contain the upstream commit that fixes this issue.
Comment 6 errata-xmlrpc 2012-07-10 07:43:05 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2012:1064 https://rhn.redhat.com/errata/RHSA-2012-1064.html
Comment 8 errata-xmlrpc 2012-07-24 14:51:48 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.0 EUS - Server Only

Via RHSA-2012:1114 https://rhn.redhat.com/errata/RHSA-2012-1114.html
Comment 9 errata-xmlrpc 2012-07-31 16:07:18 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.2 EUS - Server Only

Via RHSA-2012:1129 https://rhn.redhat.com/errata/RHSA-2012-1129.html
Comment 10 errata-xmlrpc 2012-08-07 14:04:19 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6.1 EUS - Server Only

Via RHSA-2012:1148 https://rhn.redhat.com/errata/RHSA-2012-1148.html

Note You need to log in before you can comment on or make changes to this bug.