RHSA-2026:0931 - Security Advisory

Topic

An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

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 java-1.8.0-openjdk packages provide the OpenJDK 8 Java Runtime Environment and the OpenJDK 8 Java Software Development Kit.

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)

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

• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, little endian 7 ppc64le

Fixes

• BZ - 2429924 - CVE-2026-21925 openjdk: Improve JMX connections (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)

CVEs

• CVE-2026-21925
• CVE-2026-21933
• CVE-2026-21945

References

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