IBM Support

High Impact / Highly Pervasive APAR IJ56896/IJ56918 LPAR may leak kernel memory, hang, or crash

Notification


Risk classification

HIPER (High Impact and/or Pervasive)

Risk categories

System Outage

Affected Domain

AIX 7.2/7.3

Abstract

LPAR may leak kernel memory, hang, or crash

Description

AIX LPARs may leak kernel heap memory, hang, or crash.
These issues may occur during normal process scheduling with no specific trigger.
They are more likely to be seen on 7.3 TL3 and later, on LPARs with multiple SRADs configured, while running workloads that have a lot of shared memory activity.

Recommended Action

Affected AIX Levels and Recommended Fixes
Minimum Affected LevelMaximum Affected LevelFixing LevelInterim Fix
AIX 7300-04
bos.mp64 7.3.4.0
AIX 7300-04
bos.mp64 7.3.4.0
AIX 7300-04-01
iFix
AIX 7300-03
bos.mp64 7.3.3.0
AIX 7300-03-02-2546
bos.mp64 7.3.3.2
AIX 7300-03-03
iFix
AIX 7300-02
bos.mp64 7.3.2.0
AIX 7300-02-04-2520
bos.mp64 7.3.2.5
N/A
iFix
AIX 7200-05
bos.mp64 7.2.5.0
AIX 7200-05-11-2546
bos.mp64 7.2.5.211
AIX 7200-05-12
iFix

This table describes which active levels are affected and where to obtain fixes.

Before the APAR fix is available, an interim fix (iFix) is available for each affected level.
The available interim fixes might apply only to the latest Service Packs. If a custom interim fix is required, contact IBM Support.
The interim fixes can be downloaded from the same location by using HTTPS or FTPS.

Verify you have retrieved the fixes intact:

The checksums below were generated using the "openssl dgst -sha256 [filename]" command as the following:

openssl dgst -sha256filename
78309cc3157b22a252a9dcce8117157466861cd1cb524c574d2f200eba6427d7IJ57234m1a.260129.AIX73TL04SP00.epkg.Z
2e7c4830019987d047eb7d6458eeb342700edcba05eb778565ffc680e5598c92IJ56918m1b.260108.AIX73TL03SP01.epkg.Z
4ed19dee28af83842666c8095987fedb680cc66891c64d1cf881baabc38322fcIJ57236s1a.260129.AIX73TL02SP04.epkg.Z
87cbae0b5dd0cf68478111db1a4ef711b5c772d82d235a934c52466ca2a71e1fIJ57244s1a.260129.AIX72TL05SP11.epkg.Z

Date first published

10 February 2026

[{"Risk Classification":"HIPER","Line of Business":{"code":"LOB08","label":"Cognitive Systems"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG10","label":"AIX"},"ARM Category":[{"code":"a8m0z000000cvzHAAQ","label":"Kernel-\u003EProcess"}],"ARM Case Number":"","Platform":[{"code":"PF002","label":"AIX"}],"Version":"7.2.0;7.3.0"}]

Document Information

Modified date:
10 February 2026

UID

ibm17259584

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