linux-kernel - Re: [PATCH v2] kernel: Conditionally support non-root users, groups and capabilities

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Message-ID: <20150201194508.GA19109@linux.vnet.ibm.com>
Date:	Sun, 1 Feb 2015 11:45:08 -0800
From:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
To:	Richard Weinberger <richard@....at>
Cc:	Richard Weinberger <richard.weinberger@...il.com>,
	Josh Triplett <josh@...htriplett.org>,
	Casey Schaufler <casey@...aufler-ca.com>,
	Iulia Manda <iulia.manda21@...il.com>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Michal Hocko <mhocko@...e.cz>,
	LSM <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH v2] kernel: Conditionally support non-root users, groups
 and capabilities

On Sun, Feb 01, 2015 at 12:33:23AM +0100, Richard Weinberger wrote:
> 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@...htriplett.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. :-)

Here is hoping that this helps those engineers to use a decent security
model for their devices!  ;-)

							Thanx, Paul

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