int ssl3_setup_read_buffer(SSL *s)
	{
	unsigned char *p;
	size_t len,align=0,headerlen;
	
	if (SSL_version(s) == DTLS1_VERSION || SSL_version(s) == DTLS1_BAD_VER)
		headerlen = DTLS1_RT_HEADER_LENGTH;
	else
		headerlen = SSL3_RT_HEADER_LENGTH;

#if defined(SSL3_ALIGN_PAYLOAD) && SSL3_ALIGN_PAYLOAD!=0
	align = (-SSL3_RT_HEADER_LENGTH)&(SSL3_ALIGN_PAYLOAD-1);
#endif

	if (s->s3->rbuf.buf == NULL)
		{
		len = SSL3_RT_MAX_PLAIN_LENGTH
			+ SSL3_RT_MAX_ENCRYPTED_OVERHEAD
			+ headerlen + align;
		if (s->options & SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER)
			{
			s->s3->init_extra = 1;
			len += SSL3_RT_MAX_EXTRA;
			}
#ifndef OPENSSL_NO_COMP
		if (!(s->options & SSL_OP_NO_COMPRESSION))
			len += SSL3_RT_MAX_COMPRESSED_OVERHEAD;
#endif
		if ((p=freelist_extract(s->ctx, 1, len)) == NULL)
			goto err;
		s->s3->rbuf.buf = p;
		s->s3->rbuf.len = len;
		}

	s->packet= &(s->s3->rbuf.buf[0]);
	return 1;

err:
	SSLerr(SSL_F_SSL3_SETUP_READ_BUFFER,ERR_R_MALLOC_FAILURE);
	return 0;
	}

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.