Thread (146 messages) 146 messages, 15 authors, 2017-12-07

[PATCH 18/27] bpf: Restrict kernel image access functions when the kernel is locked down

From: jlee@suse.com (joeyli)
Date: 2017-10-25 07:07:47
Also in: linux-efi, lkml, netdev

On Mon, Oct 23, 2017 at 03:53:00PM +0100, David Howells wrote:
jlee at suse.com wrote:
quoted
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.
Thank you for pointing out!

Joey Lee
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