| Message ID | 20240709-acpi-sysfs-groups-v2-1-058ab0667fa8@weissschuh.net |
|---|---|
| State | New |
| Headers | show |
| Series | ACPI: sysfs: manage sysfs attributes through device core | expand |
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c index 23373faa35ec..95a19e3569c8 100644 --- a/drivers/acpi/device_sysfs.c +++ b/drivers/acpi/device_sysfs.c @@ -540,8 +540,9 @@ int acpi_device_setup_files(struct acpi_device *dev) * If device has _STR, 'description' file is created */ if (acpi_has_method(dev->handle, "_STR")) { - status = acpi_evaluate_object(dev->handle, "_STR", - NULL, &buffer); + status = acpi_evaluate_object_typed(dev->handle, "_STR", + NULL, &buffer, + ACPI_TYPE_BUFFER); if (ACPI_FAILURE(status)) buffer.pointer = NULL; dev->pnp.str_obj = buffer.pointer;
Only buffer objects are valid return values of _STR. If something else is returned description_show() will access invalid memory. Fixes: d1efe3c324ea ("ACPI: Add new sysfs interface to export device description") Cc: stable@vger.kernel.org Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> --- drivers/acpi/device_sysfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)