Re: [PATCH] Documentation: Clarify f_cred vs current_cred() use

On Fri, 3 Jul 2020 10:44:22 -0700
Kees Cook [off-list ref] wrote:

When making access control choices from a file-based context, f_cred
must be used instead of current_cred() to avoid confused deputy attacks
where an open file may get passed to a more privileged process. Add a
short paragraph to explicitly state the rationale.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Signed-off-by: Kees Cook <redacted>
---
I forgot to include this patch in my kallsyms_show_value() f_cred series:
https://lore.kernel.org/lkml/20200702232638.2946421-1-keescook@chromium.org/ (local)
I can either take this in that series, or it can go via docs?
---
 Documentation/security/credentials.rst | 4 ++++
 1 file changed, 4 insertions(+)

I've applied it, thanks.

jon