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(parent: 4687f01) | 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>
Sat, 7 Dec 2019 12:24:06 +0000 (12:24 +0000)
commit1809e1983b006cbb5f61d550248b3df51586829a
tree1168d43aa5edc7f480274047295ecfc7a5b40b90tree | snapshot
parent4687f013dc99918301eabb1f1c28842a3321a527commit | 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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