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ACPICA: validate handler object type in two places

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ACPICA: validate handler object type in acpi_ev_has_default_handler()
and acpi_ev_find_region_handler().

Link: https://github.com/acpica/acpica/commit/f6fc648a1389
Signed-off-by: ikaros <void0red@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://patch.msgid.link/48111441.fMDQidcC6G@rafael.j.wysocki
This commit is contained in:
ikaros 2026-05-27 20:03:26 +02:00 committed by Rafael J. Wysocki
parent 27d27e75ec
commit c5296da2d5
1 changed files with 11 additions and 0 deletions
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11
drivers/acpi/acpica/evhandler.c
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@ -130,6 +130,14 @@ acpi_ev_has_default_handler(struct acpi_namespace_node *node,
/* Walk the linked list of handlers for this object */
while (handler_obj) {
/* Validate handler object type before accessing fields */
if (handler_obj->common.type !=
ACPI_TYPE_LOCAL_ADDRESS_HANDLER) {
break;
}
if (handler_obj->address_space.space_id == space_id) {
if (handler_obj->address_space.handler_flags &
ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) {
@ -292,6 +300,9 @@ union acpi_operand_object *acpi_ev_find_region_handler(acpi_adr_space_type
/* Walk the handler list for this device */
while (handler_obj) {
if (handler_obj->common.type != ACPI_TYPE_LOCAL_ADDRESS_HANDLER) {
break;
}
/* Same space_id indicates a handler is installed */