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(parent: c45c71a) | 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, 28 Jan 2017 16:11:16 +0000 (16:11 +0000)
commitfd055b014c175c759b344e43c598e12bdbd1b47d
treeb88dfd5534a7064e3b3454187b258d0370a0d0d0tree | snapshot
parentc45c71a27c33d9e1eb88ddbd6da04023ff1b278ccommit | 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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