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(parent: 86dc91b) | patch
mtd: Disable slram and phram when locked down
authorBen Hutchings <ben@decadent.org.uk>
Thu, 2 Jun 2016 23:48:39 +0000 (00:48 +0100)
committerSalvatore Bonaccorso <carnil@debian.org>
Sun, 30 Dec 2018 09:04:03 +0000 (09:04 +0000)
commitef317b77c52e9d1a4d6aa72defb826539db611bc
treed9d2ff5f2986af206ae2d6953cc6440294a0d3d3tree | snapshot
parent86dc91b3731d88a5e500104f74202bfa20ddb68bcommit | diff
mtd: Disable slram and phram when locked down

The slram and phram drivers both allow mapping regions of physical
address space such that they can then be read and written by userland
through the MTD interface.  This is probably usable to manipulate
hardware into overwriting kernel code on many systems.  Prevent that
if locked down.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Gbp-Pq: Topic features/all/lockdown
Gbp-Pq: Name mtd-disable-slram-and-phram-when-locked-down.patch
drivers/mtd/devices/phram.c diff | blob | history
drivers/mtd/devices/slram.c diff | blob | history
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