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(parent: 5045c42) | 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>
Sun, 3 Dec 2017 19:41:55 +0000 (19:41 +0000)
commit5c585c9467d7a3f1452eccfbc54abe028959156a
tree05901a6152c3aa9c9268eed3ad3ed95d4106afb0tree | snapshot
parent5045c421e96e6d90e6ae6a099ad1be1bc70c3c65commit | 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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