From 7a4c8ddba1dcf7c63b329d81de1d494188e5d2b0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 21 Sep 2026 21:49:49 +0200 Subject: [PATCH] platform/x86: apple-gmux: Switch to use acpi_bus_get_primary_device() Replace acpi_get_first_physical_node() that is slated for removal with acpi_bus_get_primary_device() that takes a reference to the device it is about to return. This addresses a potential use-after-free that may occur if the device returned by acpi_get_first_physical_node() is removed right after dropping its ACPI companion's physical_node_lock in that function. Signed-off-by: Rafael J. Wysocki Reviewed-by: Hans de Goede Link: https://patch.msgid.link/2287208.Mh6RI2rZIc@rafael.j.wysocki --- include/linux/apple-gmux.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/apple-gmux.h b/include/linux/apple-gmux.h index 206d97ffda79..d7939c3a08fd 100644 --- a/include/linux/apple-gmux.h +++ b/include/linux/apple-gmux.h @@ -109,7 +109,7 @@ static inline bool apple_gmux_detect(struct pnp_dev *pnp_dev, enum apple_gmux_ty if (!adev) return false; - dev = get_device(acpi_get_first_physical_node(adev)); + dev = acpi_bus_get_primary_device(adev); acpi_dev_put(adev); if (!dev) return false;