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Security Bulletin: IBM Java Buffer overflow vulnerability affects IBM Cloud Pak System[CVE-2026-1188]

Security Bulletin


Summary

IBM Java Buffer overflow vulnerability in Eclipse OMR port library affects IBM Cloud Pak System. Vulnerability was addressed in IBM Cloud Pak System version 2.3.6.1.

Vulnerability Details

CVEID:   CVE-2026-1188
DESCRIPTION:   In the Eclipse OMR port library component since release 0.2.0, an API function to return the textual names of all supported processor features was not accounting for the separator inserted between processor features. If the output buffer supplied to this function was incorrectly sized, failing to account for the separator when determining when a write to the buffer was safe could lead to a buffer overflow. This issue is fixed in Eclipse OMR version 0.8.0.
CWE:   CWE-131: Incorrect Calculation of Buffer Size
CVSS Source:   NVD
CVSS Base score:   9.8
CVSS Vector:   (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM Cloud Pak System2.3.5.0
IBM Cloud Pak System2.3.6.0
IBM Cloud Pak System2.3.4.0  
IBM Cloud Pak System

2.3.4.1  

2.3.4.1 iFix1

IBM OS Image for Red Hat Linux Systems5.0.1.0
IBM OS Image for Red Hat Linux Systems4.0.7.0
IBM OS Image for Red Hat Linux Systems4.0.5.0

Remediation/Fixes

IBM Cloud Pak System provides OS image for Red Hat Enterprise Linux System 4.0.8.0 based on Red Hat Enterprise Linux 8.10 and OS image for Red Hat Enterprise Linux System 5.0.2.0 based on Red Hat Enterprise Linux 9.6. IBM Cloud Pak System provides WAS Pattern IBM WebSphere Application Server Liberty V25.0.0.9.

For Power, contact IBM Support.

This Security bulletin applies to IBM Cloud Pak System, IBM Cloud Pak System Software, and IBM Cloud Pak System Software Suite.

Information on upgrading here http://www.ibm.com/support/docview.wss?uid=ibm1088795

For unsupported versions the recommendation is to upgrade to a supported version of the product.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

Change History

16 Feb 2026: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
16 February 2026

Initial Publish date:
16 February 2026

UID

ibm17260910