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Bug 1066055 - (CVE-2012-6638) CVE-2012-6638 Kernel: net: tcp: potential DoS via SYN+FIN messages
CVE-2012-6638 Kernel: net: tcp: potential DoS via SYN+FIN messages
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
impact=moderate,public=20111202,repor...
: Security
Depends On: 1066057 1066058 1097628
Blocks: 879100 1091509
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Reported: 2014-02-17 10:13 EST by Prasad J Pandit
Modified: 2015-07-31 08:09 EDT (History)
34 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Clone Of:
Environment:
Last Closed: 2014-04-24 15:43:53 EDT
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RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0433 normal SHIPPED_LIVE Moderate: kernel security, bug fix, and enhancement update 2014-04-24 17:36:04 EDT
Red Hat Product Errata RHSA-2014:0772 normal SHIPPED_LIVE Important: kernel security and bug fix update 2014-06-19 18:02:46 EDT

  None (edit)
Description Prasad J Pandit 2014-02-17 10:13:23 EST 
Linux kernel built with the TCP/IP networking support(CONFIG_INET) is
vulnerable to a possible DoS attack. It could occur when accepting new TCP
connection requests with 'SYN+FIN' flags instead of only 'SYN' flag set.

A remote user/program could use this flaw to cause DoS by sending multiple
connection requests to a machine.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/fdf5af0daf8019cec2396cdef8fb042d80fe71fa
Comment 1 Prasad J Pandit 2014-02-17 10:18:16 EST 
Statement:

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.
Comment 3 errata-xmlrpc 2014-04-24 13:40:33 EDT 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5

Via RHSA-2014:0433 https://rhn.redhat.com/errata/RHSA-2014-0433.html
Comment 5 errata-xmlrpc 2014-06-19 14:03:11 EDT 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5.9 EUS - Server Only

Via RHSA-2014:0772 https://rhn.redhat.com/errata/RHSA-2014-0772.html
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