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Date: Wed, 18 Feb 2015 10:33:59 +0400
From: Loganaden Velvindron <>
Cc: Assign a CVE Identifier <>,
Subject: Re: FreeBSD: URGENT: RNG broken for last 4 months

On Wed, Feb 18, 2015 at 10:22 AM, Kurt Seifried <> wrote:

Hi Kurt,

>From the follow-up mails it seems to affect FreeBSD-current only.

> If you are running a current kernel r273872 or later, please upgrade
> your kernel to r278907 or later immediately and regenerate keys.
> I discovered an issue where the new framework code was not calling
> randomdev_init_reader, which means that read_random(9) was not returning
> good random data.  read_random(9) is used by arc4random(9) which is
> the primary method that arc4random(3) is seeded from.
> This means most/all keys generated may be predictable and must be
> regenerated.  This includes, but not limited to, ssh keys and keys
> generated by openssl.  This is purely a kernel issue, and a simple
> kernel upgrade w/ the patch is sufficient to fix the issue.
> --
>   John-Mark Gurney                              Voice: +1 415 225 5579
>      "All that I will do, has been done, All that I have, has not."
> =======
> I assume this needs a CVE, I know technically it didn't involve a
> release but quite a few people run -current (and it's a 4 month affected
> window), so if we're assigning CVE's to stuff hosted in github, then it
> seems fair that this should get one.
> --
> Kurt Seifried -- Red Hat -- Product Security -- Cloud
> PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

This message is strictly personal and the opinions expressed do not
represent those of my employers, either past or present.

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