Thread (32 messages) 32 messages, 10 authors, 2020-08-11

Re: [PATCH v7 7/7] ima: add policy support for the new file open MAY_OPENEXEC flag

From: Kees Cook <hidden>
Date: 2020-07-24 19:04:44
Also in: linux-api, linux-fsdevel, linux-integrity, lkml

On Thu, Jul 23, 2020 at 07:12:27PM +0200, Mickaël Salaün wrote:
From: Mimi Zohar <zohar@linux.ibm.com>

The kernel has no way of differentiating between a file containing data
or code being opened by an interpreter.  The proposed O_MAYEXEC
openat2(2) flag bridges this gap by defining and enabling the
MAY_OPENEXEC flag.

This patch adds IMA policy support for the new MAY_OPENEXEC flag.

Example:
measure func=FILE_CHECK mask=^MAY_OPENEXEC
appraise func=FILE_CHECK appraise_type=imasig mask=^MAY_OPENEXEC

Signed-off-by: Mickaël Salaün <mic@digikod.net>
^^^ this S-o-b should the last in the fields.
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Reviewed-by: Lakshmi Ramasubramanian <redacted>
Link: https://lore.kernel.org/r/1588167523-7866-3-git-send-email-zohar@linux.ibm.com (local)
Reviewed-by: Kees Cook <redacted>

-- 
Kees Cook
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