A fix is available
APAR status
Closed as program error.
Error description
Abend 0C4 in Channel initiator (CHIN CHINIT) +CSQX112E CSQXDISP Dispatcher process error, TCB=009B1B00 reason=0C4000-00000011 IEA794I SVC DUMP HAS CAPTURED: DUMPID=001 REQUESTED BY JOB (CSQ1CHIN) DUMP TITLE=CSQ1,ABN= 0C4-00000011,M=CSQXDISP, LOC=CSQXRCTL.CSQXRSCL . The abend occurs while comparing the SSLPEER value for the channel against the DN attributes in the certificate due to an attempt to access storage beyond the end of the SSLPEER string.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 * * Release 0 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Abend S0C4 occurs in * * LOC=CSQXRCTL.CSQXRSCL during startup of * * an SSL/TLS channel with SSLPEER set. * * The abend is followed by message: * * " * * CSQX112E CSQXDISP Dispatcher process * * error, TCB=xxxxxxxx, * * reason=0C4000-00000011' * * " * * Following the error, further errors * * will occur for channels running on * * or starting on the failed dispatcher. * **************************************************************** * RECOMMENDATION: * **************************************************************** During startup for a channel using SSL/TLS, the Distinguished Name in the peer certificate is compared against the values specified in the SSLPEER attribute of the channel definition. During this comparison it is possible for storage beyond the end of the SSLPEER string to be accessed, and if this storage is unavailable, the reported abend 0C4 can occur.
Problem conclusion
rsxCompareSSLPeerStrings is updated to check the remaining length of the SSLPEER value to avoid the invalid access to storage beyond its end, and prevent the abend occurring. 000Y CMQXRSCL CSQXRSCL
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PI50535
Reported component name
WMQ Z/OS 8
Reported component ID
5655W9700
Reported release
000
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-10-14
Closed date
2015-10-26
Last modified date
2016-01-04
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI32354
Modules/Macros
CMQXRSCL CSQXRSCL
Fix information
Fixed component name
WMQ Z/OS 8
Fixed component ID
5655W9700
Applicable component levels
R000 PSY UI32354
UP15/12/15 P F512 ¢
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.
[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
04 January 2016