static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace,
				     const posix_acl_xattr_entry *local_ace)
{
	__u16 rc = 0; /* 0 = ACL converted ok */

	cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm);
	cifs_ace->cifs_e_tag =  le16_to_cpu(local_ace->e_tag);
	/* BB is there a better way to handle the large uid? */
	if (local_ace->e_id == cpu_to_le32(-1)) {
	/* Probably no need to le convert -1 on any arch but can not hurt */
		cifs_ace->cifs_uid = cpu_to_le64(-1);
	} else
		cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id));
	/*cFYI(1, "perm %d tag %d id %d",ace->e_perm,ace->e_tag,ace->e_id);*/
	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.