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Date: Sun, 01 Feb 2015 00:33:23 +0100
From: Richard Weinberger <richard@nod.at>
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To: paulmck@linux.vnet.ibm.com,
        Richard Weinberger <richard.weinberger@gmail.com>
CC: Josh Triplett <josh@joshtriplett.org>,
        Casey Schaufler <casey@schaufler-ca.com>,
        Iulia Manda <iulia.manda21@gmail.com>,
        One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
        Serge Hallyn <serge.hallyn@canonical.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Peter Zijlstra <peterz@infradead.org>, Michal Hocko <mhocko@suse.cz>,
        LSM <linux-security-module@vger.kernel.org>
Subject: Re: [PATCH v2] kernel: Conditionally support non-root users, groups
 and capabilities
References: <20150129184311.GA6404@winterfell> <54CAC5EE.8060107@schaufler-ca.com> <20150130003228.GJ19109@linux.vnet.ibm.com> <54CADDA4.4040602@schaufler-ca.com> <20150130013600.GM19109@linux.vnet.ibm.com> <54CAEB93.5090508@schaufler-ca.com> <20150130191302.GA19744@cloud> <54CBDFF4.1070503@schaufler-ca.com> <20150130214007.GA2613@jtriplet-mobl1> <CAFLxGvzwwPvhLtMN1jL0Rq+KLR0u2+ABaS07K0X5fGSm+jORMw@mail.gmail.com> <20150131233021.GZ19109@linux.vnet.ibm.com>
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Am 01.02.2015 um 00:30 schrieb Paul E. McKenney:
> On Fri, Jan 30, 2015 at 10:56:14PM +0100, Richard Weinberger wrote:
>> On Fri, Jan 30, 2015 at 10:40 PM, Josh Triplett <josh@joshtriplett.org> wrote:
>>> *Today*, Linux is a challenging choice for a tiny embedded system.
>>> We're trying to fix that.
>>
>> Can you please more specific about the embedded systems exactly you're
>> talking about?
>>
>> I find this patch rather controversial as it removes a lot of security.
>> Embedded systems *are* a target for all kind of attacks.
>> Misguided embedded engineers will abuse this feature and produce even more
>> weak targets.
> 
> Without this patch, those same engineers would simply run everything as
> root.  "Make a foolproof system, and they will invent a better fool".  ;-)

Luckily many services will run as non-root by default and some even refuse to
run as root. :-)

Thanks,
//richard