From: "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
To: Valdis.Kletnieks-PjAqaU27lzQ@public.gmane.org
Cc: David Lang <david-gFPdbfVZQbY@public.gmane.org>,
Matthew Garrett
<matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
keescook-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org,
gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org,
linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
jmorris-gx6/JNMH7DfYtjvyW6yDsg@public.gmane.org,
linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 00/12] One more attempt at useful kernel lockdown
Date: Mon, 09 Sep 2013 12:41:59 -0700 [thread overview]
Message-ID: <522E2487.90109@zytor.com> (raw)
In-Reply-To: <27562.1378753264-+bZmOdGhbsPr6rcHtW+onFJE71vCis6O@public.gmane.org>
On 09/09/2013 12:01 PM, Valdis.Kletnieks-PjAqaU27lzQ@public.gmane.org wrote:
> On Mon, 09 Sep 2013 11:25:38 -0700, David Lang said:
>
>> Given that we know that people want signed binaries without
>> blocking kexec, you should have '1' just enforce module signing
>> and '2' (or higher) implement a full lockdown including kexec.
>
>> Or, eliminate the -1 permanently insecure option and make this a
>> bitmask, if someone wants to enable every possible lockdown, have
>> them set it to "all 1's", define the bits only as you need them.
>
> This strikes me as much more workable than one big sledgehammer.
>
I.e. capabilities ;)
-hpa
WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@zytor.com>
To: Valdis.Kletnieks@vt.edu
Cc: David Lang <david@lang.hm>,
Matthew Garrett <matthew.garrett@nebula.com>,
linux-kernel@vger.kernel.org, keescook@chromium.org,
gregkh@linuxfoundation.org, linux-efi@vger.kernel.org,
jmorris@namei.org, linux-security-module@vger.kernel.org
Subject: Re: [PATCH 00/12] One more attempt at useful kernel lockdown
Date: Mon, 09 Sep 2013 12:41:59 -0700 [thread overview]
Message-ID: <522E2487.90109@zytor.com> (raw)
In-Reply-To: <27562.1378753264@turing-police.cc.vt.edu>
On 09/09/2013 12:01 PM, Valdis.Kletnieks@vt.edu wrote:
> On Mon, 09 Sep 2013 11:25:38 -0700, David Lang said:
>
>> Given that we know that people want signed binaries without
>> blocking kexec, you should have '1' just enforce module signing
>> and '2' (or higher) implement a full lockdown including kexec.
>
>> Or, eliminate the -1 permanently insecure option and make this a
>> bitmask, if someone wants to enable every possible lockdown, have
>> them set it to "all 1's", define the bits only as you need them.
>
> This strikes me as much more workable than one big sledgehammer.
>
I.e. capabilities ;)
-hpa
next prev parent reply other threads:[~2013-09-09 19:41 UTC|newest]
Thread overview: 104+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-09 15:49 [PATCH 00/12] One more attempt at useful kernel lockdown Matthew Garrett
2013-09-09 15:49 ` [PATCH 01/12] Add BSD-style securelevel support Matthew Garrett
[not found] ` <1378741786-18430-2-git-send-email-matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>
2013-09-09 16:27 ` H. Peter Anvin
2013-09-09 16:27 ` H. Peter Anvin
[not found] ` <522DF6DC.1050303-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-09-09 16:30 ` Matthew Garrett
2013-09-09 16:30 ` Matthew Garrett
[not found] ` <1378744207.17982.3.camel-+5W/JHIUVxg@public.gmane.org>
2013-09-09 16:42 ` H. Peter Anvin
2013-09-09 16:42 ` H. Peter Anvin
2013-09-09 16:44 ` Matthew Garrett
2013-09-09 16:44 ` Matthew Garrett
[not found] ` <1378745082.17982.4.camel-+5W/JHIUVxg@public.gmane.org>
2013-09-09 16:51 ` H. Peter Anvin
2013-09-09 16:51 ` H. Peter Anvin
[not found] ` <522DFCAC.40607-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-09-09 16:55 ` Matthew Garrett
2013-09-09 16:55 ` Matthew Garrett
2013-09-09 18:31 ` Matthew Garrett
2013-09-09 18:31 ` Matthew Garrett
2013-09-09 15:49 ` [PATCH 02/12] Enforce module signatures when securelevel is greater than 0 Matthew Garrett
2013-09-09 15:49 ` [PATCH 03/12] PCI: Lock down BAR access when securelevel is enabled Matthew Garrett
2013-09-09 15:49 ` [PATCH 04/12] x86: Lock down IO port " Matthew Garrett
2013-09-09 15:49 ` [PATCH 05/12] Restrict /dev/mem and /dev/kmem when securelevel is set Matthew Garrett
2013-09-09 15:49 ` [PATCH 06/12] acpi: Limit access to custom_method if " Matthew Garrett
2013-09-09 15:49 ` [PATCH 07/12] acpi: Ignore acpi_rsdp kernel parameter when " Matthew Garrett
2013-11-26 12:54 ` Josh Boyer
2013-09-09 15:49 ` [PATCH 08/12] kexec: Disable at runtime if securelevel has been set Matthew Garrett
2013-09-09 15:49 ` [PATCH 09/12] uswsusp: Disable when securelevel is set Matthew Garrett
2013-09-09 15:49 ` [PATCH 10/12] x86: Restrict MSR access " Matthew Garrett
2013-09-09 15:49 ` [PATCH 11/12] asus-wmi: Restrict debugfs interface " Matthew Garrett
2013-09-09 15:49 ` [PATCH 12/12] Add option to automatically set securelevel when in Secure Boot mode Matthew Garrett
[not found] ` <1378741786-18430-1-git-send-email-matthew.garrett-05XSO3Yj/JvQT0dZR+AlfA@public.gmane.org>
2013-09-09 17:18 ` [PATCH 00/12] One more attempt at useful kernel lockdown Valdis.Kletnieks-PjAqaU27lzQ
2013-09-09 17:18 ` Valdis.Kletnieks
[not found] ` <19562.1378747124-+bZmOdGhbsPr6rcHtW+onFJE71vCis6O@public.gmane.org>
2013-09-09 17:24 ` Matthew Garrett
2013-09-09 17:24 ` Matthew Garrett
2013-09-09 18:25 ` David Lang
2013-09-09 18:28 ` Matthew Garrett
2013-09-09 18:28 ` Matthew Garrett
[not found] ` <1378751318.17982.10.camel-+5W/JHIUVxg@public.gmane.org>
2013-09-09 18:40 ` David Lang
2013-09-09 18:40 ` David Lang
2013-09-09 18:42 ` Matthew Garrett
2013-09-09 18:42 ` Matthew Garrett
[not found] ` <1378752158.17982.15.camel-+5W/JHIUVxg@public.gmane.org>
2013-09-09 18:53 ` David Lang
2013-09-09 18:53 ` David Lang
[not found] ` <alpine.DEB.2.02.1309091150570.2479-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2013-09-09 19:06 ` Matthew Garrett
2013-09-09 19:06 ` Matthew Garrett
2013-09-09 19:59 ` David Lang
2013-09-09 20:06 ` Matthew Garrett
2013-09-09 20:06 ` Matthew Garrett
2013-09-09 20:15 ` David Lang
2013-09-09 20:17 ` Matthew Garrett
2013-09-09 20:17 ` Matthew Garrett
[not found] ` <alpine.DEB.2.02.1309091119330.2479-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2013-09-09 19:01 ` Valdis.Kletnieks-PjAqaU27lzQ
2013-09-09 19:01 ` Valdis.Kletnieks
2013-09-09 19:08 ` Matthew Garrett
2013-09-09 19:08 ` Matthew Garrett
[not found] ` <27562.1378753264-+bZmOdGhbsPr6rcHtW+onFJE71vCis6O@public.gmane.org>
2013-09-09 19:41 ` H. Peter Anvin [this message]
2013-09-09 19:41 ` H. Peter Anvin
2013-09-09 19:52 ` Josh Boyer
2013-09-09 19:56 ` H. Peter Anvin
2013-09-09 19:58 ` Josh Boyer
2013-09-09 20:02 ` H. Peter Anvin
[not found] ` <CA+5PVA4mu=ykBMgWYaEagCsDexR-qFYH0tfjK+4B+xOCPonNXg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-09 20:10 ` David Lang
2013-09-09 20:10 ` David Lang
[not found] ` <alpine.DEB.2.02.1309091300420.2479-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2013-09-09 20:13 ` Josh Boyer
2013-09-09 20:13 ` Josh Boyer
2013-09-09 23:02 ` Matthew Garrett
2013-09-09 23:02 ` Matthew Garrett
2013-09-09 23:19 ` David Lang
[not found] ` <alpine.DEB.2.02.1309091614010.2479-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2013-09-09 23:20 ` Kees Cook
2013-09-09 23:20 ` Kees Cook
[not found] ` <CAGXu5jJdMXP84TPP-=dtExFkpcGKPGLWnOu1-PZMokz5WhCLwQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-09 23:30 ` James Bottomley
2013-09-09 23:30 ` James Bottomley
2013-09-09 23:34 ` Kees Cook
2013-09-10 0:53 ` Matthew Garrett
2013-09-10 0:53 ` Matthew Garrett
2013-09-10 2:44 ` David Lang
[not found] ` <alpine.DEB.2.02.1309091938420.1820-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2013-09-10 2:55 ` Matthew Garrett
2013-09-10 2:55 ` Matthew Garrett
2013-09-10 3:09 ` David Lang
2013-09-10 3:53 ` Matthew Garrett
2013-09-10 3:53 ` Matthew Garrett
[not found] ` <1378785208.17982.54.camel-+5W/JHIUVxg@public.gmane.org>
2013-09-10 17:23 ` Henrique de Moraes Holschuh
2013-09-10 17:23 ` Henrique de Moraes Holschuh
[not found] ` <20130910172318.GB21530-ZGHd14iZgfaRjzvQDGKj+xxZW9W5cXbT@public.gmane.org>
2013-09-10 18:26 ` Matthew Garrett
2013-09-10 18:26 ` Matthew Garrett
[not found] ` <1378837571.17615.0.camel-+5W/JHIUVxg@public.gmane.org>
2013-09-10 18:29 ` H. Peter Anvin
2013-09-10 18:29 ` H. Peter Anvin
2013-09-10 18:51 ` gregkh
2013-09-10 18:55 ` Kees Cook
[not found] ` <CAGXu5j+3oKC-tQe8z43bG8wTpURD4FFCi+A1t9mSN_Bfzh8e8Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-10 19:17 ` David Lang
2013-09-10 19:17 ` David Lang
[not found] ` <alpine.DEB.2.02.1309101217150.10412-UEhY+ZBZOcqqLGM74eQ/YA@public.gmane.org>
2013-09-10 19:44 ` H. Peter Anvin
2013-09-10 19:44 ` H. Peter Anvin
[not found] ` <522F768F.1000101-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-09-10 23:43 ` Mimi Zohar
2013-09-10 23:43 ` Mimi Zohar
[not found] ` <1378856601.2257.208.camel-ofEJDTH4t7tcpOBKWxGlqK+Pbu69ru6nqyM6JfAXOaQ@public.gmane.org>
2013-09-10 23:48 ` H. Peter Anvin
2013-09-10 23:48 ` H. Peter Anvin
[not found] ` <522FAFC4.5090503-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
2013-09-10 23:55 ` Mimi Zohar
2013-09-10 23:55 ` Mimi Zohar
[not found] ` <1378857327.2257.214.camel-ofEJDTH4t7tcpOBKWxGlqK+Pbu69ru6nqyM6JfAXOaQ@public.gmane.org>
2013-09-10 23:58 ` H. Peter Anvin
2013-09-10 23:58 ` H. Peter Anvin
2013-09-10 18:48 ` Kees Cook
2013-09-10 18:48 ` Kees Cook
2013-09-11 9:32 ` joeyli
2013-09-11 9:32 ` joeyli
2013-09-09 20:30 ` Mimi Zohar
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