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(parent: 4842a7c) | 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, 13 Nov 2016 04:38:09 +0000 (04:38 +0000)
commit082d5e55ca17f56d0d899b4ae200f1bfb5ff89db
tree220b9ecd2fcad3fdff688053d84cc13b606a3e60tree | snapshot
parent4842a7ca6d7dd188dba2e4566662ec44d260980ecommit | 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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