struct file *get_mm_exe_file(struct mm_struct *mm)
{
	struct file *exe_file;

	/* We need mmap_sem to protect against races with removal of
	 * VM_EXECUTABLE vmas */
	down_read(&mm->mmap_sem);
	exe_file = mm->exe_file;
	if (exe_file)
		get_file(exe_file);
	up_read(&mm->mmap_sem);
	return exe_file;
}

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.