mISDN_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb)
{
	struct timeval	tv;

	if (_pms(sk)->cmask & MISDN_TIME_STAMP) {
		skb_get_timestamp(skb, &tv);
		put_cmsg(msg, SOL_MISDN, MISDN_TIME_STAMP, sizeof(tv), &tv);
	}
}

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.