Message-ID: <55392F01.1090307@tycho.nsa.gov>
Date: Thu, 23 Apr 2015 13:42:25 -0400
From: Stephen Smalley <sds@tycho.nsa.gov>
Organization: National Security Agency
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To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Andy Lutomirski <luto@amacapital.net>
CC: Linus Torvalds <torvalds@linux-foundation.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Arnd Bergmann <arnd@arndb.de>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>,
        Tom Gundersen <teg@jklm.no>, Jiri Kosina <jkosina@suse.cz>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Daniel Mack <daniel@zonque.org>,
        David Herrmann <dh.herrmann@gmail.com>,
        Djalal Harouni <tixxdz@opendz.org>
Subject: Re: [GIT PULL] kdbus for 4.1-rc1
References: <20150413190350.GA9485@kroah.com> <20150423130548.GA4253@kroah.com> <20150423163616.GA10874@kroah.com> <CALCETrWoCsXDWYPedwMDk1s=Bxtc2s+oMCLCok8jg8-RbEL4KQ@mail.gmail.com> <20150423171640.GA11227@kroah.com>
In-Reply-To: <20150423171640.GA11227@kroah.com>
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On 04/23/2015 01:16 PM, Greg Kroah-Hartman wrote:
> The binder developers at Samsung have stated that the implementation we
> have here works for their model as well, so I guess that is some kind of
> verification it's not entirely tied to D-Bus.  They have plans on
> dropping the existing binder kernel code and using the kdbus code
> instead when it is merged.

Where do things stand wrt LSM hooks for kdbus?  I don't see any security
hook calls in the kdbus tree except for the purpose of metadata
collection of process security labels.  But nothing for enforcing MAC
over kdbus IPC.  binder has a set of security hooks for that purpose, so
it would be a regression wrt MAC enforcement to switch from binder to
kdbus without equivalent checking there.
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