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Fixes, new function, restrictions, and documentation for the IBM Semeru Runtimes, Version 21.
IBM Semeru Runtimes fixes for version 21
These releases are built from the OpenJDK 21 class libraries and Eclipse OpenJ9 Java virtual machine. Fix information for the version of each component can be found in the following locations:
- Eclipse OpenJ9: The OpenJ9 release notes summarize any notable changes and limitations in each release.
- OpenJDK class libraries: OpenJDK release information is summarized at the https://foojay.io website. For example, for OpenJDK 21, see release highlights
Select the version you installed.
21.0.11
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ58195 | 153991 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-6918 | 0 | 11 | Security Vulnerability | |
| IJ58115 | 153584 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-22016 | 0 | 11 | Security Vulnerability | |
| IJ58103 | 153892 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-23865 | 0 | 11 | Security Vulnerability | |
| IJ58102 | 153571 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-34282 | 0 | 11 | Security Vulnerability | |
| IJ57597 | 153884 | Class Libraries | FORCED JVM TERMINATION MAY CAUSE ORPHANED MMAP SEGMENTS ON Z/OS DUE TO JIMAGE LOADING | 0 | 11 | Out of Memory | |
| IJ57623 | 153911 | Class Libraries | ON Z/OS INETADDRESS.GETLOOPBACKADDRESS() RETURNS 0:0:0:0:0:0:0:1 INSTEAD OF 127.0.0.1 | 0 | 11 | ||
| IJ57690 | 153933 | Java Virtual Machine | JVM FAILS TO START WHEN USING SHARED CLASS CACHE WITH DISABLEBCI | 0 | 11 | Crash | |
| IJ57022 | 153462 | JIT Compiler | CRASH DURING JIT COMPILATION WHEN FSD (DEBUG) ENABLED | 0 | 11 | Crash | |
| IJ57257 | 153553 | JIT Compiler | JAVA VM FAILS WITH ASSERTION FAILED IN CNATHELP.CPP ON IBM Z | 0 | 11 | Crash | |
| IJ57689 | 153936 | JIT Compiler | JVM CRASHES ON WINDOWS WITH INTEL AMX ENABLED | 0 | 11 | Crash | |
| IJ58134 | 153743 | Security | FIX SECURITY VULNERABILITY CVE-2026-22007 | 0 | 11 | Security Vulnerability | |
| IJ58106 | 153685 | Security | FIX SECURITY VULNERABILITY CVE-2026-22013 | 0 | 11 | Security Vulnerability | |
| IJ58104 | 153669 | Security | FIX SECURITY VULNERABILITY CVE-2026-22021 | 0 | 11 | Security Vulnerability | |
| IJ58110 | 153726 | Security | FIX SECURITY VULNERABILITY CVE-2026-34268 | 0 | 11 | Security Vulnerability | |
| PH69737 | 153515 | z/OS Extentions | CAST BYTE TO DETECT MISSING FIELD ON CATALOGSEARCHFIELD | 0 | 11 | Functional Issue | |
| PH70622 | 153910 | z/OS Extentions | STDENV SYNTAX CHECK FOR MISMATCH QUOTES UPDATE | 0 | 11 | Unexpected Behaviour | |
| PH69798 | 153517 | z/OS Extentions | UNSATISFIEDLINKERROR EXCEPTION FOR JZOS86 LIBRARY | 0 | 11 | Usability | |
21.0.10.1(z/OS Only)
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ57789 | 153967 | Class Libraries | ON Z/OS AND JZOS, THIRD-PARTY APPLICATIONS MAY PRODUCE GARBLED CHARACTERS IN LOGS AND CONSOLE OUTPUT. | 10 | 1 | Hang | |
21.0.10
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ57136 | 153177 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-21925 | 10 | 0 | Security Vulnerability | |
| IJ57132 | 153162 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-21932 | 10 | 0 | Security Vulnerability | |
| IJ57134 | 153147 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2026-21933 | 10 | 0 | Security Vulnerability | |
| IJ57124 | 153509 | Java Virtual Machine | ASSERTION IN GC | 10 | 0 | Crash | |
| IJ56482 | 153109 | Java Virtual Machine | FAILURE TO CREATE THE SHARED CLASSES CACHE DIRECTORY IN CERTAIN CIRCUMSTANCES | 10 | 0 | Exception Thrown | |
| IJ57258 | 153545 | Java Virtual Machine | FIX SECURITY VULNERABILITY CVE-2026-1188 | 10 | 0 | Security Vulnerability | |
| IJ57125 | 153495 | Java Virtual Machine | GPF/SEGV EVENT HAPPENS WHILE PROCESSING JAVA HEAP OOM ERROR. | 10 | 0 | Crash | |
| IJ55765 | 153052 | Java Virtual Machine | JAVA JIT CRASH DUE TO UNCAUGHT EXCEPTION IN CHECKLIST DESTRUCTOR LEADING TO PROGRAM TERMINATION DURING STACK UNWIND | 10 | 0 | Crash | |
| IJ56768 | 153342 | JIT Compiler | JAVA JIT: A RARE FAILURE TO GENERATE A SIGN EXTEND ON Z | 10 | 0 | Crash | |
| IJ55766 | 153049 | JIT Compiler | JAVA JIT: CRASH IN ASPARSEBITVECTOR DESTRUCTOR | 10 | 0 | Crash | |
| IJ56399 | 153098 | JIT Compiler | JAVA JIT: CRASH IN REPLACETRAMPOLINE() ON JAVA 11+ | 10 | 0 | Crash | |
| IJ56392 | 153088 | JIT Compiler | UNEXPECTED BEHAVIOUR FROM JIT COMPILED METHOD | 10 | 0 | Unexpected Behaviour | |
| IJ57130 | 153192 | Security | FIX SECURITY VULNERABILITY CVE-2026-21945 | 10 | 0 | Security Vulnerability | |
| PH69192 | 153367 | z/OS Extentions | SMF 121 RECORDING ABEND | 10 | 0 | Usability | |
21.0.9
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ56516 | 152876 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2025-53066 | 9 | 0 | Security Vulnerability | |
| IJ55402 | 152946 | Java Virtual Machine | ATTEMPT TO LOAD AN .O OR .SO FILE FROM AN .A ARCHIVE FILE FAILS ON AIX | 9 | 0 | Exception Thrown | |
| IJ55733 | 153021 | Java Virtual Machine | GARBAGECOLLECTORMXBEAN NOTIFICATION SOURCES DON'T MATCH THEIR MXBEAN OBJECTNAMES | 9 | 0 | Unexpected Behaviour | |
| IJ55734 | 153017 | JIT Compiler | BUSY HANG IN GETANDSETOBJECT | 9 | 0 | Hang | |
| IJ56711 | 153135 | JIT Compiler | JVM MAY STOP ON VIRTUAL SERVER WITHOUT AVX SUPPORT | 9 | 0 | Crash | |
| IJ56514 | 152928 | Security | FIX SECURITY VULNERABILITY CVE-2025-53057 | 9 | 0 | Security Vulnerability | |
| PH67673 | 152953 | z/OS Extentions | CIPHER TRANSFORMATION FIX ON JAVA 21 | 9 | 0 | Exception Thrown | |
| PH68459 | 153076 | z/OS Extentions | LOGGER OUTPUT GARBLED IN JZOS JOBLOG IN SEMERU 21 | 9 | 0 | Usability | |
21.0.8
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ55316 | 152612 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2025-30749 | 8 | 0 | Security Vulnerability | |
| IJ55308 | 152597 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2025-50059 | 8 | 0 | Security Vulnerability | |
| IJ55309 | 152802 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2025-50106 | 8 | 0 | Security Vulnerability | |
| IJ54483 | 152575 | Class Libraries | JAVA.LANG.ARRAYINDEXOUTOFBOUNDSEXCEPTION: ARRAY INDEX OUT OF RANGE: -1 WHILE LOADING EMPTY RESOURCE FILE | 8 | 0 | ||
| IJ50079 | 150688 | Class Libraries | JAVA -VERSION FAILS WITH LIBPATH SET TO $JAVA_HOME/LIB ON Z/OS | 8 | 0 | ||
| IJ54882 | 152687 | Class Libraries | NATIVE MEMORY LEAK IN ZLIB WITH ZEDC | 16 | 0 | Out of Memory | |
| IJ54643 | 152691 | Java Virtual Machine | ASSERTION FAILURE AT COPYFORWARDSCHEME.CPP | 8 | 0 | Crash | |
| IJ55286 | 152827 | Java Virtual Machine | UNEXPECTED OS.VERSION SYSTEM PROPERTY VALUE FOR SEMERU 21 ON Z/OS | 8 | 0 | Unexpected Behaviour | |
| IJ55085 | 151462 | JIT Compiler | JAVA JIT: GC ASSERT DUE TO AN INVALID OBJECT REFERENCE | 8 | 0 | Crash | |
| IJ55313 | 152633 | Security | FIX SECURITY VULNERABILITY CVE-2025-30754 | 8 | 0 | Security Vulnerability | |
| PH67386 | 152847 | z/OS Extentions | IBMZSECURITY HAS A HARD DEPENDENCY ON OPENJCEPLUS | 8 | 0 | ||
| PH67057 | 152781 | z/OS Extentions | JZOS SMF 121 DATE IS BEING WRITTEN IN THE WRONG FORMAT | 8 | 0 | Usability | |
| PH67763 | 152969 | z/OS Extentions | MEMORY GROWTH IN XDH KEY AGREEMENT AND CIPHER INITIALIZATION | 16 | 0 | ||
21.0.7
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ53553 | 152268 | Class Libraries | CONSOLE.ENCODING PROPERTY HONOURED IN SEMERU 21(Z/OS) FROM 21.0.7 | 7 | 0 | Functional Issue | |
| IJ54115 | 152530 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2025-2900 | 7 | 0 | Security Vulnerability | |
| IJ54639 | 152194 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2025-30698 | 7 | 0 | Security Vulnerability | |
| IJ53617 | 152329 | Java Virtual Machine | A SIGSEGV/GPF EVENT RECEIVED WHILE PROCESSING VERIFYERROR | 7 | 0 | Crash | |
| IJ53953 | 152509 | Java Virtual Machine | CRASH WHILE RESOLVING METHODHANDLENATIVES | 7 | 0 | Crash | |
| IJ53990 | 145243 | Java Virtual Machine | NOSUCHMETHODEXCEPTION OR NOCLASSDEFFOUNDERROR WHEN LOADING CLASSES | 7 | 0 | ||
| IJ53429 | 152085 | JIT Compiler | JAVA (9+) JIT: OPTIMIZATION OF STRINGLATIN1 CLASS CAUSES SEGV | 7 | 0 | Crash | |
| IJ54626 | 152679 | JIT Compiler | JVM UNEXPECTEDLY TERMINATES ON WINDOWS | 7 | 0 | Crash | |
| IJ54641 | 152552 | JIT Compiler | SIGILL FROM JIT COMPILED METHOD | 7 | 0 | Crash | |
| IJ54756 | 152697 | JIT Compiler | UNEXPECTED BEHAVIOUR WITH VERY LARGE ARRAYS | 7 | 0 | Unexpected Behaviour | |
| IJ54637 | 152181 | Security | FIX SECURITY VULNERABILITY CVE-2025-21587 | 7 | 0 | Security Vulnerability | |
| PH66176 | 152588 | z/OS Extentions | OPENJCEPLUS REPORTS INCORRECT BLOCK SIZE FOR PASSWORD-BASED ENCRYPTION (PBE) ALGORITHM | 7 | 0 | ||
21.0.6
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ52443 | 151727 | Java 626/JCL | JAVA OUT OF MEMORY (HEAP SPACE) WITH BYTE TO CHAR ARRAY CONVERTER ON SEMERU JDK FOR Z/OS | 6 | 0 | Out of Memory | |
| IJ52920 | 151920 | Java Virtual Machine | A SIGSEGV/GPF EVENT RECEIVED WHILE GETTING EXTENDED NPE MESSAGE | 6 | 0 | Crash | |
| IJ53008 | 151956 | Java Virtual Machine | A SIGSEGV/GPF EVENT RECEIVED WHILE PROCESSING VERIFYERROR | 6 | 0 | Crash | |
| IJ53205 | 152047 | Reliability and Serviceability | HEALTHCENTERNOTSUPPORTEDEXCEPTION WHILE ENABLING CLASSHISTOGRAM FEATURE ON SEMERU Z/OS | 6 | 0 | Exception Thrown | |
| PH64354 | 152003 | z/OS Extentions | IBMJCEHYBRID FAILS TO PERFORM FAILOVER FOR SECURERANDOM WHEN ICSF IS NOT AVAILABLE | 6 | 0 | ||
21.0.5
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ57242 | 153525 | JIT Compiler | THE JIT FAILS TO PROTECT A PRIVATIZED LOAD FROM CAUSING AN ARRAY OVERRUN | 25 | 0 | ||
| IJ53029 | 151524 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2024-21208 | 5 | 0 | Security Vulnerability | |
| IJ53026 | 151498 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2024-21217 | 5 | 0 | Security Vulnerability | |
| IJ53059 | 151673 | Java Virtual Machine | FIX SECURITY VULNERABILITY CVE-2024-10917 | 5 | 0 | Security Vulnerability | |
| IJ53060 | 151853 | JIT Compiler | FIX SECURITY VULNERABILITY CVE-2024-9143 | 5 | 0 | Security Vulnerability | |
21.0.4
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ51870 | 150958 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2024-21145 | 4 | 0 | Security Vulnerability | |
| IJ50448 | 150814 | Java Virtual Machine | CRASH IN SEMERU 11.0.22+7 ON WINDOWS IN POPCNT INSTRUCTION | 4 | 0 | ||
| IJ51918 | 150991 | Java Virtual Machine | FIX SECURITY VULNERABILITY CVE-2024-21131 | 4 | 0 | Security Vulnerability | |
| IJ50877 | 150940 | JIT Compiler | JAVA JIT: INCORRECT ARGUMENT PASSED TO A JNI METHOD | 4 | 0 | Unexpected Behaviour | |
| IJ50878 | 150805 | JIT Compiler | JAVA JIT: SEGV IN ARRAY COPY FOR STRINGBUFFER OR STRINGBUILDER ON POWER OR AARCH64 | 4 | 0 | Crash | |
| IJ50938 | 151105 | JIT Compiler | JAVA JIT - CRASH IN TR_HANDLEINJECTEDBASICBLOCK::FINDANDREPLACEREFERENCES() | 4 | 0 | Crash | |
| IJ51976 | 151481 | Service, Build, Packaging and Delivery | Semeru RPM Installation fails on SLES | 4 | 0 | ||
21.0.3
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ50949 | 150575 | Class Libraries | FIX SECURITY VULNERABILITY CVE-2024-21012 | 3 | 0 | Security Vulnerability | |
| IJ51327 | 150784 | JIT Compiler | FIX SECURITY VULNERABILITY CVE-2024-3933 | 3 | 0 | Security Vulnerability | |
| IJ50275 | 150750 | Reliability and Serviceability | THREAD STACK CORRUPTION WHILE GENERATING JAVACORES LEADING TO UNEXPECTED BEHAVIOUR | 3 | 0 | Out of Memory | |
21.0.2
| APAR | Defect | Component | Oracle Bug ID | Abstract | SR | FP | Defect Type |
|---|---|---|---|---|---|---|---|
| Defect Fixes | |||||||
| IJ49911 | 150545 | Java Virtual Machine | STRING COMPARISON FAILURES CAUSE BY STRING COMPRESSION | 2 | 0 | Exception Thrown | |
| IJ49777 | 150026 | JIT Compiler | FIX SECURITY VULNERABILITY CVE-2024-20921 | 2 | 0 | Security Vulnerability | |
| IJ49800 | 150012 | JIT Compiler | FIX SECURITY VULNERABILITY CVE-2024-20918 | 2 | 0 | Security Vulnerability | |
| IJ50001 | 149971 | JIT Compiler | FIX SECURITY VULNERABILITY CVE-2024-22361 | 2 | 0 | Security Vulnerability | |
| IJ49781 | 150039 | Security | FIX SECURITY VULNERABILITY CVE-2024-20945 | 2 | 0 | Security Vulnerability | |
| IJ49775 | 150046 | Security | FIX SECURITY VULNERABILITY CVE-2024-20952 | 2 | 0 | Security Vulnerability | |
21.0.1
There are no fixes with this first release of the IBM Semeru Runtimes version 21 SDK.
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Document Information
Modified date:
21 May 2026
UID
ibm17106320