Red Hat Product Errata RHSA-2026:0849 - Security Advisory
Issued:
2026-01-21
Updated:
2026-01-21

RHSA-2026:0849 - Security Advisory

Synopsis

Moderate: OpenJDK 11.0.30 ELS Security Update for Windows Builds

Type/Severity

Security Advisory: Moderate

Topic

An update is now available for OpenJDK.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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 11 packages provide the OpenJDK 11 Java Runtime Environment and the OpenJDK 11 Java Software Development Kit.

This release of the Red Hat build of OpenJDK 11 (11.0.30) with Extended Lifecycle Support for Windows serves as a replacement for the Red Hat build of OpenJDK 11 (11.0.29) 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: Enhance Handling of URIs (CVE-2026-21932)
  • JDK: Improve HttpServer Request handling (CVE-2026-21933)
  • JDK: Enhance Certificate Checking (CVE-2026-21945)
  • JDK: LIBPNG heap buffer overflow (CVE-2025-65018)
  • JDK: LIBPNG buffer overflow (CVE-2025-64720)

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

  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 x86_64
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 s390x
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 ppc64le
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 9 aarch64
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 x86_64
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 s390x
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 ppc64le
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 8 aarch64
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 7 x86_64
  • OpenJDK Java Extended Life Cycle Support 11 for RHEL 7 s390x

Fixes

  • BZ - 2416904 - CVE-2025-64720 libpng: LIBPNG buffer overflow
  • BZ - 2416907 - CVE-2025-65018 libpng: LIBPNG heap buffer overflow
  • BZ - 2429925 - CVE-2026-21932 openjdk: Enhance Handling of URIs (Oracle CPU 2026-01)
  • BZ - 2429926 - CVE-2026-21933 openjdk: Improve HttpServer Request handling (Oracle CPU 2026-01)
  • BZ - 2429927 - CVE-2026-21945 openjdk: Enhance Certificate Checking (Oracle CPU 2026-01)

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.