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(parent: 131b70a) | 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>
Tue, 2 May 2017 15:21:44 +0000 (15:21 +0000)
commit3fa49e5acc21b51abc64fc19edbb27943ef4dd55
tree8f2109c6f7b82d31e6f0e71288044f36328c6757tree | snapshot
parent131b70ae091bc4163c8c598a967d7922d0127e2bcommit | 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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