int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
{
	struct qeth_cmd_buffer *iob;
	struct qeth_ipa_cmd *cmd;

	QETH_DBF_TEXT(SETUP, 2, "diagtrap");
	iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
	cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
	cmd->data.diagass.subcmd_len = 80;
	cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
	cmd->data.diagass.type = 1;
	cmd->data.diagass.action = action;
	switch (action) {
	case QETH_DIAGS_TRAP_ARM:
		cmd->data.diagass.options = 0x0003;
		cmd->data.diagass.ext = 0x00010000 +
			sizeof(struct qeth_trap_id);
		qeth_get_trap_id(card,
			(struct qeth_trap_id *)cmd->data.diagass.cdata);
		break;
	case QETH_DIAGS_TRAP_DISARM:
		cmd->data.diagass.options = 0x0001;
		break;
	case QETH_DIAGS_TRAP_CAPTURE:
		break;
	}
	return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.