static inline int qeth_create_skb_frag(struct qeth_qdio_buffer *qethbuffer,
		struct qdio_buffer_element *element,
		struct sk_buff **pskb, int offset, int *pfrag, int data_len)
{
	struct page *page = virt_to_page(element->addr);
	if (*pskb == NULL) {
		if (qethbuffer->rx_skb) {
			/* only if qeth_card.options.cq == QETH_CQ_ENABLED */
			*pskb = qethbuffer->rx_skb;
			qethbuffer->rx_skb = NULL;
		} else {
			*pskb = dev_alloc_skb(QETH_RX_PULL_LEN + ETH_HLEN);
			if (!(*pskb))
				return -ENOMEM;
		}

		skb_reserve(*pskb, ETH_HLEN);
		if (data_len <= QETH_RX_PULL_LEN) {
			memcpy(skb_put(*pskb, data_len), element->addr + offset,
				data_len);
		} else {
			get_page(page);
			memcpy(skb_put(*pskb, QETH_RX_PULL_LEN),
			       element->addr + offset, QETH_RX_PULL_LEN);
			skb_fill_page_desc(*pskb, *pfrag, page,
				offset + QETH_RX_PULL_LEN,
				data_len - QETH_RX_PULL_LEN);
			(*pskb)->data_len += data_len - QETH_RX_PULL_LEN;
			(*pskb)->len      += data_len - QETH_RX_PULL_LEN;
			(*pskb)->truesize += data_len - QETH_RX_PULL_LEN;
			(*pfrag)++;
		}
	} else {
		get_page(page);
		skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len);
		(*pskb)->data_len += data_len;
		(*pskb)->len      += data_len;
		(*pskb)->truesize += data_len;
		(*pfrag)++;
	}


	return 0;
}

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.