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(parent: 30f648a) | 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>
Sat, 23 Dec 2017 00:39:51 +0000 (00:39 +0000)
commitd55ffef52bb0ea4595e37c2d95e88a3ad2d56906
treede6eb28e86b58bd99bdd7d788ba56044321740d1tree | snapshot
parent30f648a1196078982850eaffd1b4114e64341b6ecommit | 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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