parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
		unsigned int *num_of_nodes,
		struct dfs_info3_param **target_nodes,
		const struct nls_table *nls_codepage, int remap,
		const char *searchName)
{
	int i, rc = 0;
	char *data_end;
	bool is_unicode;
	struct dfs_referral_level_3 *ref;

	if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
		is_unicode = true;
	else
		is_unicode = false;
	*num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals);

	if (*num_of_nodes < 1) {
		cERROR(1, "num_referrals: must be at least > 0,"
			"but we get num_referrals = %d\n", *num_of_nodes);
		rc = -EINVAL;
		goto parse_DFS_referrals_exit;
	}

	ref = (struct dfs_referral_level_3 *) &(pSMBr->referrals);
	if (ref->VersionNumber != cpu_to_le16(3)) {
		cERROR(1, "Referrals of V%d version are not supported,"
			"should be V3", le16_to_cpu(ref->VersionNumber));
		rc = -EINVAL;
		goto parse_DFS_referrals_exit;
	}

	/* get the upper boundary of the resp buffer */
	data_end = (char *)(&(pSMBr->PathConsumed)) +
				le16_to_cpu(pSMBr->t2.DataCount);

	cFYI(1, "num_referrals: %d dfs flags: 0x%x ...\n",
			*num_of_nodes,
			le32_to_cpu(pSMBr->DFSFlags));

	*target_nodes = kzalloc(sizeof(struct dfs_info3_param) *
			*num_of_nodes, GFP_KERNEL);
	if (*target_nodes == NULL) {
		cERROR(1, "Failed to allocate buffer for target_nodes\n");
		rc = -ENOMEM;
		goto parse_DFS_referrals_exit;
	}

	/* collect necessary data from referrals */
	for (i = 0; i < *num_of_nodes; i++) {
		char *temp;
		int max_len;
		struct dfs_info3_param *node = (*target_nodes)+i;

		node->flags = le32_to_cpu(pSMBr->DFSFlags);
		if (is_unicode) {
			__le16 *tmp = kmalloc(strlen(searchName)*2 + 2,
						GFP_KERNEL);
			if (tmp == NULL) {
				rc = -ENOMEM;
				goto parse_DFS_referrals_exit;
			}
			cifsConvertToUCS((__le16 *) tmp, searchName,
					PATH_MAX, nls_codepage, remap);
			node->path_consumed = cifs_ucs2_bytes(tmp,
					le16_to_cpu(pSMBr->PathConsumed),
					nls_codepage);
			kfree(tmp);
		} else
			node->path_consumed = le16_to_cpu(pSMBr->PathConsumed);

		node->server_type = le16_to_cpu(ref->ServerType);
		node->ref_flag = le16_to_cpu(ref->ReferralEntryFlags);

		/* copy DfsPath */
		temp = (char *)ref + le16_to_cpu(ref->DfsPathOffset);
		max_len = data_end - temp;
		node->path_name = cifs_strndup_from_ucs(temp, max_len,
						      is_unicode, nls_codepage);
		if (!node->path_name) {
			rc = -ENOMEM;
			goto parse_DFS_referrals_exit;
		}

		/* copy link target UNC */
		temp = (char *)ref + le16_to_cpu(ref->NetworkAddressOffset);
		max_len = data_end - temp;
		node->node_name = cifs_strndup_from_ucs(temp, max_len,
						      is_unicode, nls_codepage);
		if (!node->node_name)
			rc = -ENOMEM;
	}

parse_DFS_referrals_exit:
	if (rc) {
		free_dfs_info_array(*target_nodes, *num_of_nodes);
		*target_nodes = NULL;
		*num_of_nodes = 0;
	}
	return rc;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.