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(parent: 8075e66) | 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>
Tue, 19 Sep 2017 01:34:05 +0000 (02:34 +0100)
commitdc0c470ea38836412b5e04cb62851121a1668386
treed78fd48c52f59e569f42b0c3bfa62e3a7152503dtree | snapshot
parent8075e665d691e459ce83e6d364f694336b46ce14commit | 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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