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From: Mimi Zohar <zohar@kernel.org>
To: Kees Cook <keescook@chromium.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org,
	Scott Branden <scott.branden@broadcom.com>,
	Luis Chamberlain <mcgrof@kernel.org>,
	Jessica Yu <jeyu@kernel.org>, SeongJae Park <sjpark@amazon.de>,
	KP Singh <kpsingh@chromium.org>,
	linux-efi@vger.kernel.org, linux-security-module@vger.kernel.org,
	linux-integrity@vger.kernel.org, selinux@vger.kernel.org,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3 04/19] fs/kernel_read_file: Remove FIRMWARE_PREALLOC_BUFFER enum
Date: Mon, 27 Jul 2020 09:35:00 -0400	[thread overview]
Message-ID: <1595856900.4841.88.camel@kernel.org> (raw)
In-Reply-To: <20200724213640.389191-5-keescook@chromium.org>

On Fri, 2020-07-24 at 14:36 -0700, Kees Cook wrote:
> FIRMWARE_PREALLOC_BUFFER is a "how", not a "what", and confuses the LSMs
> that are interested in filtering between types of things. The "how"
> should be an internal detail made uninteresting to the LSMs.
> 
> Fixes: a098ecd2fa7d ("firmware: support loading into a pre-allocated buffer")
> Fixes: fd90bc559bfb ("ima: based on policy verify firmware signatures (pre-allocated buffer)")
> Fixes: 4f0496d8ffa3 ("ima: based on policy warn about loading firmware (pre-allocated buffer)")
> Cc: stable@vger.kernel.org
> Acked-by: Scott Branden <scott.branden@broadcom.com>
> Signed-off-by: Kees Cook <keescook@chromium.org>

Thank you for updating the pre-allocated buffer comment.

Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>

  reply	other threads:[~2020-07-27 13:35 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-24 21:36 [PATCH v3 00/19] Introduce partial kernel_read_file() support Kees Cook
2020-07-24 21:36 ` [PATCH v3 01/19] test_firmware: Test platform fw loading on non-EFI systems Kees Cook
2020-07-26  3:00   ` kernel test robot
2020-07-27 21:24   ` Sasha Levin
2020-07-24 21:36 ` [PATCH v3 02/19] selftest/firmware: Add selftest timeout in settings Kees Cook
2020-07-24 21:36 ` [PATCH v3 03/19] firmware_loader: EFI firmware loader must handle pre-allocated buffer Kees Cook
2020-07-25 10:07   ` Greg Kroah-Hartman
2020-07-25 15:50     ` Kees Cook
2020-07-25 17:20       ` Greg Kroah-Hartman
2020-07-24 21:36 ` [PATCH v3 04/19] fs/kernel_read_file: Remove FIRMWARE_PREALLOC_BUFFER enum Kees Cook
2020-07-27 13:35   ` Mimi Zohar [this message]
2020-07-27 21:24   ` Sasha Levin
2020-07-24 21:36 ` [PATCH v3 05/19] fs/kernel_read_file: Remove FIRMWARE_EFI_EMBEDDED enum Kees Cook
2020-07-27 21:24   ` Sasha Levin
2020-07-24 21:36 ` [PATCH v3 06/19] fs/kernel_read_file: Split into separate include file Kees Cook
2020-07-27 14:41   ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 07/19] fs/kernel_read_file: Split into separate source file Kees Cook
2020-07-27 14:53   ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 08/19] fs/kernel_read_file: Remove redundant size argument Kees Cook
2020-07-27 16:29   ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 09/19] fs/kernel_read_file: Switch buffer size arg to size_t Kees Cook
2020-07-27 16:29   ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 10/19] fs/kernel_read_file: Add file_size output argument Kees Cook
2020-07-27 16:29   ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 11/19] LSM: Introduce kernel_post_load_data() hook Kees Cook
2020-07-27 10:49   ` Mimi Zohar
2020-07-28 19:41     ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 12/19] firmware_loader: Use security_post_load_data() Kees Cook
2020-07-27 10:57   ` Mimi Zohar
2020-07-28 19:43     ` Kees Cook
2020-07-29 16:29       ` Mimi Zohar
2020-07-29 18:10         ` Mimi Zohar
2020-07-29 19:13           ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 13/19] module: Call security_kernel_post_load_data() Kees Cook
2020-07-24 21:36 ` [PATCH v3 14/19] LSM: Add "contents" flag to kernel_read_file hook Kees Cook
2020-07-24 21:36 ` [PATCH v3 15/19] IMA: Add support for file reads without contents Kees Cook
2020-07-27 13:23   ` Mimi Zohar
2020-07-28 19:44     ` Kees Cook
2020-07-28 19:56       ` Greg Kroah-Hartman
2020-07-28 20:12         ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 16/19] fs/kernel_file_read: Add "offset" arg for partial reads Kees Cook
2020-07-24 21:36 ` [PATCH v3 17/19] firmware: Store opt_flags in fw_priv Kees Cook
2020-07-24 21:36 ` [PATCH v3 18/19] firmware: Add request_partial_firmware_into_buf() Kees Cook
2020-07-29  1:17   ` Luis Chamberlain
2020-07-29  6:22     ` Takashi Iwai
2020-07-29 17:43       ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 19/19] test_firmware: Test partial read support Kees Cook
2020-07-25  5:14 ` [PATCH v3 00/19] Introduce partial kernel_read_file() support Scott Branden
2020-07-25 10:05 ` Greg Kroah-Hartman
2020-07-25 15:48   ` Kees Cook
2020-07-27 11:16 ` Mimi Zohar
2020-07-27 19:18   ` Scott Branden
2020-07-28 18:48     ` Mimi Zohar
2020-07-28 19:56       ` Scott Branden
2020-07-29  1:19 ` Luis Chamberlain

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