Fixes are available
APAR status
Closed as program error.
Error description
When a multi-threaded C++ client application connects to the queue manager, the connect fails with a 2219 (MQRC_CALL_IN_PROGRESS) and an FDC with Probe Id XC130031 and Component xehExceptionHandler is produced. The Function Stack shows the following: MQM Function Stack ImqQueueManager::connect MQCONNX trmzstMQCONNX reqDoConnect reqConnectChl reqFindConvClass xcsFFST
Local fix
Problem summary
**************************************************************** USERS AFFECTED: Any users of WebSphere MQ connecting to the queue manager with client-bound applications which provide an MQCD version lower than 9. Platforms affected: All Distributed (iSeries, all Unix and Windows) **************************************************************** PROBLEM SUMMARY: The problem was caused by the caching mechanism being used for the handling of shared conversations within the MQ client. The caching mechanism in use was based on unique MQCD structures associated with a particular connection. As a result, when adding the MQCD associated with a new connection into the cache, MQ was not checking the length of the MQCD passed in and was assuming that it was a version 9 MQCD. This would cause a buffer overrun of the MQCD to occur, resulting in a read access violation.
Problem conclusion
WebSphere MQ was modified to ensure that it does not attempt to copy more bytes from the ClientConnPtr provided MQCD than the size of the specific version of the MQCD provided. --------------------------------------------------------------- The fix is targeted for delivery in the following PTFs: v7.0 Platform Fix Pack 7.0.1.2 -------- -------------------- Windows U200316 AIX U829807 HP-UX (PA-RISC) U829678 HP-UX (Itanium) U829681 Solaris (SPARC) U829806 Solaris (x86-64) U829680 iSeries tbc_p700_0_1_2 Linux (x86) U829677 Linux (x86-64) U829676 Linux (zSeries) U829682 Linux (Power) U829679 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available, information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IC64690
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2009-11-19
Closed date
2009-11-26
Last modified date
2009-11-26
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R700 PSY
UP
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Document Information
Modified date:
31 March 2023