linux-kernel - Re: [tech-board] [PATCH 00/11] xz: Updates to license, filters, and compression options

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Date: Sat, 30 Mar 2024 14:48:48 +0200
From: Lasse Collin <lasse.collin@...aani.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Jonathan Corbet <corbet@....net>, Kees Cook <keescook@...omium.org>, Jia
 Tan <jiat0218@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [tech-board] [PATCH 00/11] xz: Updates to license, filters, and
 compression options

On 2024-03-29 Andrew Morton wrote:
> On Fri, 29 Mar 2024 14:51:41 -0600 Jonathan Corbet <corbet@....net>
> wrote:
> 
> > > Andrew (and anyone else), please do not take this code right now.
> > >
> > > Until the backdooring of upstream xz[1] is fully understood, we
> > > should not accept any code from Jia Tan, Lasse Collin, or any
> > > other folks associated with tukaani.org. It appears the domain,
> > > or at least credentials associated with Jia Tan, have been used
> > > to create an obfuscated ssh server backdoor via the xz upstream
> > > releases since at least 5.6.0. Without extensive analysis, we
> > > should not take any associated code. It may be worth doing some
> > > retrospective analysis of past contributions as well...
> > >
> > > Lasse, are you able to comment about what is going on here?  
> > 
> > FWIW, it looks like this series has been in linux-next for a few
> > days. Maybe it needs to come out, for now at least?  
> 
> Yes, I have removed that series.

Thank you. None of these patches are urgent. I'm on a holiday and only
happened to look at my emails and it seems to be a major mess.

My proper investigation efforts likely start in the first days of
April. That is, I currently know only a few facts which alone are bad
enough.

Info will be updated here: https://tukaani.org/xz-backdoor/

-- 
Lasse Collin