PK28559: DFHWB0001 0C6/AKEA AT OFFSET X'FFFF' IN DFHWBUR

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The S0C6 is being caused by DFHWBUR overlaying its own stack due
  to the length on the LOCATE_URIMAP being greater than 256 bytes.
  Earlier in the trace where the locate did not fail when the
  request was less than 256 bytes. The failing LOCATE_URIMAP is
  using a length of X'904'. In WBUR(X'25B4') in the
  GET_NEXT_PATH_SEGMENT proc it shows CICS clears 256 bytes to
  accommodate the segment but it does not set a check if the
  request is greater than x'256'.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend 0C6 in DFHWBUR with >256          *
  *                      character query string.                 *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  During locate_urimap the input path and query string is scanned
  to see if a urimap matches. The current segment of the input is
  copied into stack storage for the comparison. If this segment is
  >256 bytes then stack storage can be overwritten. This can
  cause a 0C6 abend within DFHWBUR depending on the length of the
  overwrite.
  Additional keywords: ABEND0C6 ABENDS0C6 S0C6 ABEND0C4
  ABENDS0C4 0C4 S0C4
  

Problem conclusion

• DFHWBUR has been changed in routine Get_next_path_segment to
  only process a maximum of 256 bytes.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UK17778

Modules/Macros

•    DESWBUR  DFHWBUR
  

Fix information

• Fixed component name

  CICSTS 3.1 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK17778

     UP06/09/08 P F609

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.