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(parent: ee3f8b3) | 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)
committerRaspbian forward porter <root@raspbian.org>
Sat, 5 May 2018 11:51:50 +0000 (12:51 +0100)
commit2174b392ff0827f9b5b6722c1c76284c9d403025
tree2956eb469466aa2dda48b175ba4756dbe797a2c8tree | snapshot
parentee3f8b37fb033fcb34a8959602ddcfc45fb779c5commit | 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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