On Tue, Mar 26, 2019 at 11:28 AM Matthew Garrett <matthewgarr...@google.com> wrote: > > From: Matthew Garrett <mj...@srcf.ucam.org> > > 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. >
Reviewed-by: Andy Lutomirski <l...@kernel.org>
