Matthew Garrett 96c4f67293 x86: Lock down IO port access when the kernel is locked down ... IO port access would permit users to gain access to PCI configuration registers, which in turn (on a lot of hardware) give access to MMIO register space. This would potentially permit root to trigger arbitrary DMA, so lock it down by default. This also implicitly locks down the KDADDIO, KDDELIO, KDENABIO and KDDISABIO console ioctls. Signed-off-by: Matthew Garrett <mjg59@google.com> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Kees Cook <keescook@chromium.org> cc: x86@kernel.org Signed-off-by: James Morris <jmorris@namei.org>		2019-08-19 21:54:16 -07:00
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Kconfig	lockdown: Enforce module signatures if the kernel is locked down	2019-08-19 21:54:15 -07:00
lockdown.c	x86: Lock down IO port access when the kernel is locked down	2019-08-19 21:54:16 -07:00
Makefile