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Date: Wed, 20 Jul 2011 13:27:13 +0530
From: Huzaifa Sidhpurwala <>
Subject: Re: CVE request: kernel: ipv6: make fragment identifications
 less predictable

On 07/20/2011 12:42 PM, Eugene Teo wrote:
> IPv6 fragment identification generation is way beyond what we use for
> IPv4 : It uses a single generator. Its not scalable and allows DoS attacks.
> Now inetpeer is IPv6 aware, we can use it to provide a more secure and
> scalable frag ident generator (per destination, instead of system wide)
> This patch :
> 1) defines a new secure_ipv6_id() helper
> 2) extends inet_getid() to provide 32bit results
> 3) extends ipv6_select_ident() with a new dest parameter
> Thanks, Eugene

Please use CVE-2011-2699

Huzaifa Sidhpurwala / Red Hat Security Response Team

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