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Date: Wed, 01 Oct 2014 23:00:54 +0200
From: Hannes Frederic Sowa <>
Subject: Re: CVE Request: linux kernel net_get_random_once bug


On Wed, Oct 1, 2014, at 20:04, Andrew Tappert wrote:
> My colleague Tom O'Connor and I have identified a security bug in the
> Linux kernel that results in drastically degraded randomness of IP IDs,
> TCP sequence numbers, and ephemeral port numbers on affected systems.
> The bug existed in kernel versions 3.13 and 3.14.  We are posting here
> rather than to the private "distros" list because the bug has already
> been fixed.  However, we don't think that the security implications of
> the bug have been acknowledged anywhere, and we think it needs a CVE.  A
> full write-up on the bug is posted at

I totally agree that this needs a CVE and I thought it was already taken
care of by the people on I am sorry to not have
checked for a CVE request afterwards.

The corresponding fix is here:

Thanks a lot,

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