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(parent: 2249e2b) | 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)
committerAurelien Jarno <aurel32@debian.org>
Fri, 2 Mar 2018 07:52:22 +0000 (07:52 +0000)
commitc12e9d112441c6b36bb3e019d202908e24d124d7
treee392f580024eaae51dfa5a52c2e7e362f4027c64tree | snapshot
parent2249e2baa711b51d52156be0a15b0b7425628803commit | 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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