int security_port_sid(u8 protocol, u16 port, u32 *out_sid)
{
	struct ocontext *c;
	int rc = 0;

	read_lock(&policy_rwlock);

	c = policydb.ocontexts[OCON_PORT];
	while (c) {
		if (c->u.port.protocol == protocol &&
		    c->u.port.low_port <= port &&
		    c->u.port.high_port >= port)
			break;
		c = c->next;
	}

	if (c) {
		if (!c->sid[0]) {
			rc = sidtab_context_to_sid(&sidtab,
						   &c->context[0],
						   &c->sid[0]);
			if (rc)
				goto out;
		}
		*out_sid = c->sid[0];
	} else {
		*out_sid = SECINITSID_PORT;
	}

out:
	read_unlock(&policy_rwlock);
	return rc;
}

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.