Red Hat has issued an Important security update for OpenJDK 21 portable Linux builds, addressing eight CVEs including a high-severity flaw in Path Factories (CVE-2026-22016, CVSS 7.5). The update replaces OpenJDK 21.0.10 with version 21.0.11, which contains these security fixes, bug fixes, and enhancements. Affected users should apply the update following Red Hat's standard procedures.
Red Hat Product Errata RHSA-2026:9690 - Security Advisory Issued: 2026-04-23 Updated: 2026-04-23 RHSA-2026:9690 - Security Advisory Overview Synopsis Important: OpenJDK 21.0.11 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 21 packages provide the OpenJDK 21 Java Runtime Environment and the OpenJDK 21 Java Software Development Kit. This release of the Red Hat build of OpenJDK 21 (21.0.11) for portable Linux serves as a replacement for the Red Hat build of OpenJDK 21 (21.0.10) 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: Enhance crypto algorithm support (CVE-2026-22007) JDK: Improve Kerberos credentialing (CVE-2026-22013) JDK: Enhance Path Factories Redux (CVE-2026-22016) JDK: Enhance Zip file reading (CVE-2026-22018) JDK: Enhance certificate chain validation (CVE-2026-22021) JDK: Updating FreeType 2.14.1 (CVE-2026-23865) JDK: Enhance TLS connection handling (CVE-2026-34282) JDK: Enhance key generation (CVE-2026-34268) Bug Fix(es): When copying files, OpenJDK 21 prefers to use the copy_file_range native function for performance reasons, only falling back to sendfile when this fails. However, in previous OpenJDK 21 releases, a response of EOPNOTSUPP (operation not supported) did not cause the JDK to fall back to sendfile. This is rectified in this release. (OPENJDK-4676) 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 (for Middleware) 1 x86_64 Fixes (none) CVEs CVE-2026-22007 CVE-2026-22013 CVE-2026-22016 CVE-2026-22018 CVE-2026-22021 CVE-2026-23865 CVE-2026-34268 CVE-2026-34282 References https://access.redhat.com/security/updates/classification/#important https://docs.redhat.com/en/documentation/red_hat_build_of_openjdk/21/html/release_notes_for_red_hat_build_of_openjdk_21.0.11/index The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .