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Bug 1213951 - (CVE-2015-3332) CVE-2015-3332 kernel: TCP Fast Open local DoS
CVE-2015-3332 kernel: TCP Fast Open local DoS
Status: CLOSED NOTABUG
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=20150414,repor...
: Security
Depends On: 1213955
Blocks: 1211864 1213954
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Reported: 2015-04-21 11:31 EDT by Vasyl Kaigorodov
Modified: 2015-05-05 05:49 EDT (History)
37 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2015-05-05 05:49:00 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Vasyl Kaigorodov 2015-04-21 11:31:57 EDT 
Linux kernel built with the IPv4 networking support(CONFIG_NET) is vulnerable to a DoS flaw. It could occur while using TCP Fast open option when initiating a network connection. This issue is a regression caused by upstream commit '355a901e6cf1', when it was back-ported to older 3.10.y - 3.16.y branches.

An unprivileged local user could use this flaw to crash the system resulting in DoS.

Upstream fix:
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  -> http://www.spinics.net/lists/netdev/msg325602.html

References:
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  -> http://www.openwall.com/lists/oss-security/2015/04/18/2
  -> https://bugs.debian.org/782515
Comment 1 Vasyl Kaigorodov 2015-04-21 11:36:07 EDT 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1213955]
Comment 2 Prasad J Pandit 2015-04-21 15:48:18 EDT 
Statement:

This issue does not affect the versions of the kernel package as shipped with
Red Hat Enterprise Linux 5, 6, 7 and Red Hat Enterprise MRG 2.
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