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ACPI: Limit access to custom_method when the kernel is locked down
authorMatthew Garrett <matthew.garrett@nebula.com>
Wed, 5 Apr 2017 16:40:30 +0000 (17:40 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Mon, 30 Oct 2017 15:32:11 +0000 (15:32 +0000)
commit3eb2bf95d7114f9a0fd00167400776455c682c59
tree03dc06994e3c11a9e5299d451fe3666edd08ada1tree | snapshot
parentf2ccf8bd3897cbd87f85c07ed1a17ab495471c28commit | diff
ACPI: Limit access to custom_method when the kernel is locked down

custom_method effectively allows arbitrary access to system memory, making
it possible for an attacker to circumvent restrictions on module loading.
Disable it if the kernel is locked down.

Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Gbp-Pq: Topic features/all/lockdown
Gbp-Pq: Name 0053-ACPI-Limit-access-to-custom_method-when-the-kernel-i.patch
drivers/acpi/custom_method.c diff | blob | history
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