static void iriap_getvaluebyclass_response(struct iriap_cb *self,
					   __u16 obj_id,
					   __u8 ret_code,
					   struct ias_value *value)
{
	struct sk_buff *tx_skb;
	int n;
	__be32 tmp_be32;
	__be16 tmp_be16;
	__u8 *fp;

	IRDA_DEBUG(4, "%s()\n", __func__);

	IRDA_ASSERT(self != NULL, return;);
	IRDA_ASSERT(self->magic == IAS_MAGIC, return;);
	IRDA_ASSERT(value != NULL, return;);
	IRDA_ASSERT(value->len <= 1024, return;);

	/* Initialize variables */
	n = 0;

	/*
	 *  We must adjust the size of the response after the length of the
	 *  value. We add 32 bytes because of the 6 bytes for the frame and
	 *  max 5 bytes for the value coding.
	 */
	tx_skb = alloc_skb(value->len + self->max_header_size + 32,
			   GFP_ATOMIC);
	if (!tx_skb)
		return;

	/* Reserve space for MUX and LAP header */
	skb_reserve(tx_skb, self->max_header_size);
	skb_put(tx_skb, 6);

	fp = tx_skb->data;

	/* Build frame */
	fp[n++] = GET_VALUE_BY_CLASS | IAP_LST;
	fp[n++] = ret_code;

	/* Insert list length (MSB first) */
	tmp_be16 = htons(0x0001);
	memcpy(fp+n, &tmp_be16, 2);  n += 2;

	/* Insert object identifier ( MSB first) */
	tmp_be16 = cpu_to_be16(obj_id);
	memcpy(fp+n, &tmp_be16, 2); n += 2;

	switch (value->type) {
	case IAS_STRING:
		skb_put(tx_skb, 3 + value->len);
		fp[n++] = value->type;
		fp[n++] = 0; /* ASCII */
		fp[n++] = (__u8) value->len;
		memcpy(fp+n, value->t.string, value->len); n+=value->len;
		break;
	case IAS_INTEGER:
		skb_put(tx_skb, 5);
		fp[n++] = value->type;

		tmp_be32 = cpu_to_be32(value->t.integer);
		memcpy(fp+n, &tmp_be32, 4); n += 4;
		break;
	case IAS_OCT_SEQ:
		skb_put(tx_skb, 3 + value->len);
		fp[n++] = value->type;

		tmp_be16 = cpu_to_be16(value->len);
		memcpy(fp+n, &tmp_be16, 2); n += 2;
		memcpy(fp+n, value->t.oct_seq, value->len); n+=value->len;
		break;
	case IAS_MISSING:
		IRDA_DEBUG( 3, "%s: sending IAS_MISSING\n", __func__);
		skb_put(tx_skb, 1);
		fp[n++] = value->type;
		break;
	default:
		IRDA_DEBUG(0, "%s(), type not implemented!\n", __func__);
		break;
	}
	iriap_do_r_connect_event(self, IAP_CALL_RESPONSE, tx_skb);

	/* Drop reference count - see state_r_execute(). */
	dev_kfree_skb(tx_skb);
}

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.