RHSA-2026:1823 - Security Advisory

Topic

An update for JDK Mission Control (JMC) is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Description

JDK Mission Control (JMC) is a powerful profiler for HotSpot JVMs and has an advanced set of tools that enables efficient and detailed analysis of the extensive data collected by JDK Flight Recorder. The tool chain enables developers and administrators to collect and analyze data from Java applications running locally or deployed in production environments.

Bug Fix(es) and Enhancement(s):

• jmc: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing [rhel-9.4.z] (JIRA:RHEL-135476)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.4 x86_64

Fixes

• BZ - 2419500 - CVE-2025-66566 lz4-java: lz4-java: Information Disclosure via Insufficient Output Buffer Clearing

CVEs

• CVE-2025-66566

References

• https://access.redhat.com/security/updates/classification/#important