bos_reply_print(netdissect_options *ndo,
                register const u_char *bp, int length, int32_t opcode)
{
	const struct rx_header *rxh;

	if (length <= (int)sizeof(struct rx_header))
		return;

	rxh = (const struct rx_header *) bp;

	/*
	 * Print out the afs call we're invoking.  The table used here was
	 * gleaned from volser/volint.xg
	 */

	ND_PRINT((ndo, " bos reply %s", tok2str(bos_req, "op#%d", opcode)));

	bp += sizeof(struct rx_header);

	/*
	 * If it was a data packet, interpret the response.
	 */

	if (rxh->type == RX_PACKET_TYPE_DATA)
		/* Well, no, not really.  Leave this for later */
		;
	else {
		/*
		 * Otherwise, just print out the return code
		 */
		ND_PRINT((ndo, " errcode"));
		INTOUT();
	}

	return;

trunc:
	ND_PRINT((ndo, " [|bos]"));
}

The product reads data past the end, or before the beginning, of the intended buffer.