void sctp_write_space(struct sock *sk)
{
	struct sctp_association *asoc;

	/* Wake up the tasks in each wait queue.  */
	list_for_each_entry(asoc, &((sctp_sk(sk))->ep->asocs), asocs) {
		__sctp_write_space(asoc);
	}
}

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.