int qeth_core_load_discipline(struct qeth_card *card,
		enum qeth_discipline_id discipline)
{
	int rc = 0;
	mutex_lock(&qeth_mod_mutex);
	switch (discipline) {
	case QETH_DISCIPLINE_LAYER3:
		card->discipline = try_then_request_module(
			symbol_get(qeth_l3_discipline), "qeth_l3");
		break;
	case QETH_DISCIPLINE_LAYER2:
		card->discipline = try_then_request_module(
			symbol_get(qeth_l2_discipline), "qeth_l2");
		break;
	}
	if (!card->discipline) {
		dev_err(&card->gdev->dev, "There is no kernel module to "
			"support discipline %d\n", discipline);
		rc = -EINVAL;
	}
	mutex_unlock(&qeth_mod_mutex);
	return rc;
}

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.