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

[Kees Cook]

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

^^^ this S-o-b should the last in the fields.

> Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
> Reviewed-by: Lakshmi Ramasubramanian <nramas@xxxxxxxxxxxxxxxxxxx>
> Link: https://lore.kernel.org/r/1588167523-7866-3-git-send-email-zohar@xxxxxxxxxxxxx

Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>

-- 
Kees Cook