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(parent: d06a685) | 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)
committerYves-Alexis Perez <corsac@debian.org>
Thu, 4 Jan 2018 11:12:40 +0000 (11:12 +0000)
commit15b9dbb42eb3b45c4e9432412f7e1d84e94002f8
tree1838e72767082d324b4b746eb6e473ee09b3a2e5tree | snapshot
parentd06a685384d269fa3d09fe229b20bf27145bba0dcommit | 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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