smb_init_nttransact(const __u16 sub_command, const int setup_count,
		   const int parm_len, struct cifs_tcon *tcon,
		   void **ret_buf)
{
	int rc;
	__u32 temp_offset;
	struct smb_com_ntransact_req *pSMB;

	rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
				(void **)&pSMB);
	if (rc)
		return rc;
	*ret_buf = (void *)pSMB;
	pSMB->Reserved = 0;
	pSMB->TotalParameterCount = cpu_to_le32(parm_len);
	pSMB->TotalDataCount  = 0;
	pSMB->MaxDataCount = cpu_to_le32((tcon->ses->server->maxBuf -
					  MAX_CIFS_HDR_SIZE) & 0xFFFFFF00);
	pSMB->ParameterCount = pSMB->TotalParameterCount;
	pSMB->DataCount  = pSMB->TotalDataCount;
	temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
			(setup_count * 2) - 4 /* for rfc1001 length itself */;
	pSMB->ParameterOffset = cpu_to_le32(temp_offset);
	pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
	pSMB->SetupCount = setup_count; /* no need to le convert byte fields */
	pSMB->SubCommand = cpu_to_le16(sub_command);
	return 0;
}

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