Re: [PATCH 18/27] bpf: Restrict kernel image access functions when the kernel is locked down
flat view
From: David Howells <dhowells@redhat.com>
Date: 2017-10-23 14:53:05
Also in:
linux-efi, linux-security-module, lkml
jlee@suse.com wrote:
hm... patch 4 only prevents write_mem() but not read_mem(). Or I missed anything?
Actually, yes, as it happens, patch 11 prevents you from even opening /dev/mem and /dev/kmem by locking down open of /dev/port. So I've moved this bit to patch 4, simplified and posted a new variant for patch 4. David