CVE-2025-3631: IBM MQ denial of service

Published Jul 11, 2025
·
Updated

An IBM MQ 9.3 and 9.4 Client connecting to an MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.

Other sources

An IBM MQ Client connecting to an MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.

— IBM

Affected Software

6 affected components
IBM MQ Appliance>=9.3.2<=9.3.5.2
IBM MQ Appliance>=9.4.0.0<9.4.0.12
IBM MQ Appliance>=9.4.0.0<9.4.3
IBM MQ Appliance>=9.4.1.0<9.4.3.0
IBM MQ Operator<=SC2: v3.2.0 - v3.2.13 CD:  v3.3.0, v3.4.0, v3.4.1, v3.5.0, v3.5.1 - v3.6.0 LTS: v2.0.0 - 2.0.29
IBM supplied MQ Advanced container images<=SC2: 9.4.0.6-r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2

Remediation

Information

This issue was addressed under known issue DT435291 . IBM MQ version 9.4 LTS Apply fix pack 9.4.0.12 IBM MQ version 9.3 CD and 9.4 CD Upgrade to IBM MQ version 9.4.3 IBM MQ Appliance version 9.3 CD Upgrade to IBM MQ Appliance cumulative security update 9.4.0.12, or later firmware.  IBM MQ Appliance version 9.4 LTS Apply IBM MQ Appliance cumulative security update 9.4.0.12, or later firmware.  IBM MQ Appliance version 9.4 CD Apply IBM MQ Appliance cumulative security update 9.4.3.0, or later firmware.

Event History

Jul 11, 2025
CVE Published
via MITRE·06:37 PM
Data Sourced
via MITRE·06:37 PM
RemedyDescriptionSeverityWeakness
Data Sourced
via NVD·07:15 PM
DescriptionSeverityWeaknessAffected Software
Jul 23, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2025-3631?

CVE-2025-3631 has been rated with a severity that may disrupt the functionality of IBM MQ Clients connecting to an MQ Queue Manager.

2

How do I fix CVE-2025-3631?

To fix CVE-2025-3631, update to the latest versions of IBM MQ Appliance that are not affected by this vulnerability.

3

Who is affected by CVE-2025-3631?

CVE-2025-3631 affects IBM MQ Appliance versions 9.3 CD, 9.4 LTS, and 9.4 CD within specified version ranges.

4

What causes the vulnerability in CVE-2025-3631?

CVE-2025-3631 is caused by an IBM MQ Client that can lead to a SIGSEGV in the AMQRMPPA channel process.

5

Are there any workarounds for CVE-2025-3631?

There are currently no recommended workarounds for CVE-2025-3631 besides applying the necessary updates.

Company

Resources

Contact

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