tree ee922f8fbd1dd96c0aee0fd6274d94271f55217c
parent 7d8b6c63751cfbbe5eef81a48c22978b3407a3ad
author Kees Cook <keescook@chromium.org> 1393352884 -0800
committer Kees Cook <keescook@chromium.org> 1406314065 -0700

security: introduce kernel_fw_from_file hook

In order to validate the contents of firmware being loaded, there must be
a hook to evaluate any loaded firmware that wasn't built into the kernel
itself. Without this, there is a risk that a root user could load malicious
firmware designed to mount an attack against kernel memory (e.g. via DMA).

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>