Issued:
2026-01-26
Updated:
2026-01-26

RHSA-2026:0901 - Important: OpenJDK 25.0.2 Security Update for Portable Linux Builds

Synopsis

Important: OpenJDK 25.0.2 Security Update for Portable Linux Builds

Type/Severity

Security Advisory Important

Topic

An update is now available for OpenJDK.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The OpenJDK 25 packages provide the OpenJDK 25 Java Runtime Environment and the OpenJDK 25 Java Software Development Kit.

This release of the Red Hat build of OpenJDK 25 (25.0.2) for portable Linux serves as a replacement for the Red Hat build of OpenJDK 25 (25.0.1) and includes security and bug fixes as well as enhancements. For further information, refer to the release notes linked to in the References section.

Security Fix(es):

  • JDK: Improve JMX connections (CVE-2026-21925)

  • JDK: Improve HttpServer Request handling (CVE-2026-21933)

  • JDK: Enhance Certificate Checking (CVE-2026-21945)

  • libpng: LIBPNG buffer overflow (CVE-2025-64720)

  • libpng: LIBPNG heap buffer overflow (CVE-2025-65018)

Bug Fix(es):

  • Debugging output was found to be accidentally written to the blocked.certs file during the OpenJDK build. This led to the file being invalid. This issue has now been rectified and a build-time check added to ensure the validity of the file. (OPENJDK-4362)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

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

Affected Products

ProductVersionArch
OpenJDK Java (for Middleware)1x86_64

Fixes

(none)

CVEs

References

Additional information