[6lo] [Technical Errata Reported] RFC8163 (5996)

RFC Errata System <rfc-editor@rfc-editor.org> Thu, 27 February 2020 21:13 UTC

To: kerlyn@ieee.org, jpmartocci@sbcglobal.net, cneilson@deltacontrols.com, stuart.donaldson@honeywell.com, suresh@kaloom.com, evyncke@cisco.com, carlesgo@entel.upc.edu, shwethab@cisco.com
From: RFC Errata System <rfc-editor@rfc-editor.org>
Cc: kerlyn@ieee.org, 6lo@ietf.org, rfc-editor@rfc-editor.org
Content-Type: text/plain; charset="UTF-8"
Message-Id: <20200227211316.ABFA4F40711@rfc-editor.org>
Date: Thu, 27 Feb 2020 13:13:16 -0800
Archived-At: <https://mailarchive.ietf.org/arch/msg/6lo/vI7Cgc6KaqUDOY-SBn2gIXZU_WY>
Subject: [6lo] [Technical Errata Reported] RFC8163 (5996)
Precedence: list

The following errata report has been submitted for RFC8163,
"Transmission of IPv6 over Master-Slave/Token-Passing (MS/TP) Networks".

--------------------------------------
You may review the report below and at:
https://www.rfc-editor.org/errata/eid5996

--------------------------------------
Type: Technical
Reported by: Kerry Lynn <kerlyn@ieee.org>

Section: Appendix B.

Original Text
-------------
       /*
        * Sanity check the encoding to prevent the while() loop below
        * from overrunning the output buffer.
        */
       if (read_index + code > length)
         return 0;


Corrected Text
--------------
       /*
        * Sanity check the encoding to prevent the while() loop below
        * from overrunning the output buffer.
        */
       if (code == 0 || read_index + code > length)
         return 0;


Notes
-----
This was submitted as a change to [BACnet], Annex T, by James Butler.  The normative procedure for decoding COBS is correct in [BACnet], 9.10.3.2(a) but this bug appears in the informative example in Annex T.  Since the purpose of COBS encoding is to eliminate all zero bytes from the data, the presence of a zero indicates an error.

Instructions:
-------------
This erratum is currently posted as "Reported". If necessary, please
use "Reply All" to discuss whether it should be verified or
rejected. When a decision is reached, the verifying party  
can log in to change the status and edit the report, if necessary. 

--------------------------------------
RFC8163 (draft-ietf-6lo-6lobac-08)
--------------------------------------
Title               : Transmission of IPv6 over Master-Slave/Token-Passing (MS/TP) Networks
Publication Date    : May 2017
Author(s)           : K. Lynn, Ed., J. Martocci, C. Neilson, S. Donaldson
Category            : PROPOSED STANDARD
Source              : IPv6 over Networks of Resource-constrained Nodes
Area                : Internet
Stream              : IETF
Verifying Party     : IESG

[6lo] [Technical Errata Reported] RFC8163 (5996) RFC Errata System