 struct task_struct * __cpuinit fork_idle(int cpu)
 {
 	struct task_struct *task;
 	struct pt_regs regs;
 
 	task = copy_process(CLONE_VM, 0, idle_regs(&regs), 0, NULL,
 			    &init_struct_pid, 0);
	if (!IS_ERR(task))
 		init_idle(task, cpu);
 
 	return task;
 }

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.