From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: James Bottomley
<James.Bottomley-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
Cc: Ken Goldman <kgoldman-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>,
greg-R92VP3DqSWVWk0Htik3J/w@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: [PATCH RFC 0/4] RFC: in-kernel resource manager
Date: Wed, 11 Jan 2017 10:56:57 -0700 [thread overview]
Message-ID: <20170111175657.GA22783@obsidianresearch.com> (raw)
In-Reply-To: <1484149193.2509.12.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
On Wed, Jan 11, 2017 at 07:39:53AM -0800, James Bottomley wrote:
> RAW access means the ability to DoS the TPM simply by exhausting
> handles. Therefore, I think most applications only get RM access.
Re-read what Jarkko is proposing. He is not making a complete safe &
secure RM in the kernel. He is making a tool to allow userspace and
the kernel to share the TPM sanely.
It is not an access control tool, it is not a security tool, it is not
intended to support safe unpriv userspace access.
So there is no reason to have a different access control model in
userspace, it is not a fundamentally different security environment
from the existing raw device.
A future project to provide an unpriv safe cdev from the kernel is
something different.
Jason
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next prev parent reply other threads:[~2017-01-11 17:56 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <kgoldman@us.ibm.com>
2017-01-04 16:12 ` [tpmdd-devel] [PATCH RFC 0/4] RFC: in-kernel resource manager Dr. Greg Wettstein
[not found] ` <201701041612.v04GCfPK031525-DHO+NtfOqB5PEDpkEIzg7wC/G2K4zDHf@public.gmane.org>
2017-01-04 18:37 ` Kenneth Goldman
2017-01-09 23:16 ` [tpmdd-devel] " Jarkko Sakkinen
2017-01-10 19:29 ` Ken Goldman
2017-01-11 11:36 ` Jarkko Sakkinen
2017-01-10 20:05 ` Jason Gunthorpe
[not found] ` <20170110200558.GA5102-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-11 10:00 ` Andreas Fuchs
[not found] ` <ee6c1e48-e21f-d05e-0939-473001224aba-iXjGqz/onsDSyEMIgutvibNAH6kLmebB@public.gmane.org>
2017-01-11 15:59 ` Ken Goldman
2017-01-11 18:03 ` Jason Gunthorpe
[not found] ` <20170111180328.GB22783-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-11 18:27 ` Stefan Berger
2017-01-11 19:18 ` [tpmdd-devel] " Jason Gunthorpe
2017-01-11 11:34 ` Jarkko Sakkinen
[not found] ` <20170111113416.4h6ucm5y3hjjnfhv-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-11 15:39 ` James Bottomley
[not found] ` <1484149193.2509.12.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-11 17:56 ` Jason Gunthorpe [this message]
2017-01-11 18:25 ` [tpmdd-devel] " James Bottomley
2017-01-11 19:04 ` Jason Gunthorpe
2017-01-02 13:22 Jarkko Sakkinen
2017-01-02 16:36 ` [tpmdd-devel] " James Bottomley
[not found] ` <1483374980.2458.13.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-02 19:33 ` Jarkko Sakkinen
[not found] ` <20170102193320.trawto65nkjccbao-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-02 21:40 ` James Bottomley
2017-01-03 5:26 ` [tpmdd-devel] " James Bottomley
[not found] ` <1483421218.19261.4.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-03 13:41 ` Jarkko Sakkinen
[not found] ` <20170103134100.stgxkmzbckon4jfb-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-03 16:14 ` James Bottomley
[not found] ` <1483460095.2464.6.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-03 18:36 ` Jarkko Sakkinen
[not found] ` <20170103183602.ar5typcvy2rx7cjs-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-03 19:14 ` Jarkko Sakkinen
[not found] ` <20170103191456.vpl6ny7rbgu3yigx-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-03 19:34 ` James Bottomley
2017-01-03 21:54 ` Jason Gunthorpe
[not found] ` <20170103215445.GD29656-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-04 12:58 ` Jarkko Sakkinen
[not found] ` <20170104125810.3qkkfe72cnb76ige-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-04 16:55 ` Jason Gunthorpe
[not found] ` <1483393248.2458.32.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-03 13:51 ` Jarkko Sakkinen
[not found] ` <20170103135121.4kh3jld5gaq3ptj4-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-03 16:36 ` James Bottomley
2017-01-03 21:47 ` [tpmdd-devel] " Jason Gunthorpe
[not found] ` <20170103214702.GC29656-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-03 22:21 ` Ken Goldman
2017-01-03 23:20 ` Jason Gunthorpe
2017-01-03 22:22 ` Ken Goldman
2017-01-03 22:39 ` James Bottomley
2017-01-04 0:17 ` [tpmdd-devel] " Jason Gunthorpe
[not found] ` <20170104001732.GB32185-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-04 0:29 ` James Bottomley
[not found] ` <1483489799.2464.79.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-04 0:56 ` Jason Gunthorpe
2017-01-04 12:50 ` Jarkko Sakkinen
[not found] ` <20170104125045.7lorpe55drnrqce5-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2017-01-04 14:53 ` James Bottomley
[not found] ` <1483541583.2561.20.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-04 18:31 ` Jason Gunthorpe
[not found] ` <20170104183125.GC783-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-04 18:57 ` James Bottomley
[not found] ` <1483556271.2561.50.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-04 19:24 ` Jason Gunthorpe
2017-01-10 18:55 ` Ken Goldman
2017-01-04 12:48 ` Jarkko Sakkinen
[not found] ` <1483461370.2464.19.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2017-01-03 22:18 ` Ken Goldman
2017-01-03 21:32 ` Jason Gunthorpe
[not found] ` <20170102132213.22880-1-jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2017-01-05 15:52 ` Fuchs, Andreas
[not found] ` <9F48E1A823B03B4790B7E6E69430724DC7C149F6-pTbww/UJF9iZbMGAS439G2SU2VBt9E6NG9Ur7JDdleE@public.gmane.org>
2017-01-05 17:27 ` Jason Gunthorpe
[not found] ` <20170105172726.GA11680-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-05 18:06 ` James Bottomley
[not found] ` <1483639595.2515.52.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-06 8:43 ` Andreas Fuchs
[not found] ` <410e3045-58dc-5415-30c1-c86eb916b6c8-iXjGqz/onsDSyEMIgutvibNAH6kLmebB@public.gmane.org>
2017-01-10 18:57 ` Ken Goldman
2017-01-05 18:33 ` [tpmdd-devel] " James Bottomley
[not found] ` <1483641223.2515.62.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-05 19:20 ` Jason Gunthorpe
2017-01-05 19:55 ` [tpmdd-devel] " James Bottomley
[not found] ` <1483646149.2515.83.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-05 22:21 ` Jason Gunthorpe
[not found] ` <20170105222118.GC31047-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-05 22:58 ` James Bottomley
[not found] ` <1483657126.2515.107.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-05 23:50 ` Jason Gunthorpe
2017-01-06 0:36 ` [tpmdd-devel] " James Bottomley
[not found] ` <1483663002.2515.134.camel-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>
2017-01-06 8:59 ` Andreas Fuchs
[not found] ` <f5c8f4a2-d4ad-a2a0-9443-26589c58f9a7-iXjGqz/onsDSyEMIgutvibNAH6kLmebB@public.gmane.org>
2017-01-06 19:10 ` Jason Gunthorpe
[not found] ` <20170105192025.GB12587-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2017-01-10 19:03 ` Ken Goldman
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