int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode,
		       unsigned int cmd, void __user *arg)
{
	int ret;

	ret = scsi_verify_blk_ioctl(bd, cmd);
	if (ret < 0)
		return ret;

	return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg);
}
Weaknesses in this category are related to the management of permissions, privileges, and other security features that are used to perform access control.