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(parent: 6591e19) | patch
acpi: Limit access to custom_method if securelevel is set
authorMatthew Garrett <mjg59@srcf.ucam.org>
Fri, 9 Mar 2012 13:39:37 +0000 (08:39 -0500)
committerBen Hutchings <ben@decadent.org.uk>
Thu, 28 Sep 2017 17:27:56 +0000 (18:27 +0100)
commitbe435e78cab8aa1a5b172b8ebc794c7a884c081d
tree4411753aa9562524e5845bc150772629696f78ectree | snapshot
parent6591e1950e60ec99f8ec6dedef42aa67400d9d27commit | diff
acpi: Limit access to custom_method if securelevel is set

custom_method effectively allows arbitrary access to system memory, making
it possible for an attacker to modify the kernel at runtime. Prevent this
if securelevel has been set.

Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Gbp-Pq: Topic features/all/securelevel
Gbp-Pq: Name acpi-limit-access-to-custom_method-if-securelevel-is.patch
drivers/acpi/custom_method.c diff | blob | history
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