Thread (41 messages) 41 messages, 7 authors, 2018-06-06

[PATCH v4 5/8] ima: based on policy require signed firmware (sysfs fallback)

From: mcgrof@kernel.org (Luis R. Rodriguez)
Date: 2018-06-01 22:46:21
Also in: kexec, linux-integrity, lkml

On Fri, Jun 01, 2018 at 06:39:55PM -0400, Mimi Zohar wrote:
On Fri, 2018-06-01 at 20:21 +0200, Luis R. Rodriguez wrote:
quoted
On Tue, May 29, 2018 at 02:01:57PM -0400, Mimi Zohar wrote:
quoted
Luis, is the security_kernel_post_read_file LSM hook in
firmware_loading_store() still needed after this patch?  Should it be
calling security_kernel_load_data() instead?
That's up to Kees to decide as he added that hook, and knows
what LSMs may be doing with it. From my perspective it is confusing
to have that hook there so I think it could be removed now.

Kees?
Commit?6593d92 ("firmware_class: perform new LSM checks") references
two methods of loading firmware -??filesystem-found firmware and
demand-loaded blobs. ?I assume this call in firmware_loading_store()
is the demand-loaded blobs. ?Does that method still exist? ?Is it
still being used?
Yeah its the stupid sysfs interface. So likely loadpin needs porting
as you IMA as you did.

  Luis
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