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ACPI fix for 6.16-rc3

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Fix a crash in ACPICA while attempting to evaluate a control method
 that expects more arguments than are being passed to it, which was
 exposed by a defective firmware update from a prominent OEM on multiple
 systems (Rafael Wysocki).
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Merge tag 'acpi-6.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a crash in ACPICA while attempting to evaluate a control method
  that expects more arguments than are being passed to it, which was
  exposed by a defective firmware update from a prominent OEM on
  multiple systems (Rafael Wysocki)"

* tag 'acpi-6.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: Refuse to evaluate a method if arguments are missing
This commit is contained in:
Linus Torvalds 2025-06-21 08:27:12 -07:00
commit 26fef998eb
1 changed files with 7 additions and 0 deletions
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7
drivers/acpi/acpica/dsmethod.c
View file

@ -483,6 +483,13 @@ acpi_ds_call_control_method(struct acpi_thread_state *thread,
return_ACPI_STATUS(AE_NULL_OBJECT);
}
if (this_walk_state->num_operands < obj_desc->method.param_count) {
ACPI_ERROR((AE_INFO, "Missing argument for method [%4.4s]",
acpi_ut_get_node_name(method_node)));
return_ACPI_STATUS(AE_AML_UNINITIALIZED_ARG);
}
/* Init for new method, possibly wait on method mutex */
status =