On Tue, Mar 26, 2019 at 11:28 AM Matthew Garrett <[email protected]> wrote: > > From: Matthew Garrett <[email protected]> > > 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 <[email protected]>
