ESB-2026.4086

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4086 java-25-openjdk security update 23 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: java-25-openjdk Publisher: Red Hat Operating System: Red Hat Resolution: Patch/Upgrade CVE Names: CVE-2026-33416 CVE-2026-33636 CVE-2026-23865 CVE-2026-22016 CVE-2026-34282 CVE-2026-22021 CVE-2026-22013 CVE-2026-22008 CVE-2026-22018 CVE-2026-22007 CVE-2026-34268 CVE-2026-26740 Original Bulletin: https://access.redhat.com/errata/RHSA-2026:9693 Comment: CVSS (Max): 7.6 CVE-2026-33636 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H EPSS (Max): 0.2% (35th) CVE-2026-26740 2026-04-22 - --------------------------BEGIN INCLUDED TEXT-------------------- RHSA-2026:9693 - Security Advisory Issued: 2026-04-22 Updated: 2026-04-22 Synopsis Java-25-openjdk security update Type/Severity Security Advisory: Important Topic An update for java-25-openjdk is now available for Red Hat Enterprise Linux 9 and Red Hat Enterprise Linux 10. 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. Security Fix(es): o JDK: Enhance crypto algorithm support (CVE-2026-22007) o JDK: Improved Arena allocations (CVE-2026-22008) o JDK: Improve Kerberos credentialing (CVE-2026-22013) o JDK: Enhance Path Factories Redux (CVE-2026-22016) o JDK: Enhance Zip file reading (CVE-2026-22018) o JDK: Enhance certificate chain validation (CVE-2026-22021) o JDK: Updating FreeType 2.14.1 (CVE-2026-23865) o JDK: Enhance TLS connection handling (CVE-2026-34282) o JDK: Enhance key generation (CVE-2026-34268) This release also updates a number of third-party libraries included in the JDK. The libraries themselves are affected by the following CVEs, but this is not a statement that the JDK itself is affected: o giflib: Denial of Service via buffer overflow in EGifGCBToExtension (CVE-2026-26740) o libpng: Information disclosure and denial of service via out-of-bounds read /write in Neon palette expansion (CVE-2026-33636) o libpng: Arbitrary code execution due to use-after-free vulnerability (CVE-2026-33416) Bug Fix(es): o When copying files, OpenJDK 25 prefers to use the copy_file_range native function for performance reasons, only falling back to sendfile when this fails. However, in previous OpenJDK 25 releases, a response of EOPNOTSUPP (operation not supported) did not cause the JDK to fall back to sendfile. This is rectified in this release. (RHEL-169939, RHEL-169937) 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 o Red Hat Enterprise Linux for x86_64 10 x86_64 o Red Hat Enterprise Linux for x86_64 9 x86_64 o Red Hat Enterprise Linux for IBM z Systems 10 s390x o Red Hat Enterprise Linux for IBM z Systems 9 s390x o Red Hat Enterprise Linux for Power, little endian 10 ppc64le o Red Hat Enterprise Linux for Power, little endian 9 ppc64le o Red Hat Enterprise Linux for ARM 64 10 aarch64 o Red Hat Enterprise Linux for ARM 64 9 aarch64 o Red Hat CodeReady Linux Builder for x86_64 10 x86_64 o Red Hat CodeReady Linux Builder for x86_64 9 x86_64 o Red Hat CodeReady Linux Builder for Power, little endian 10 ppc64le o Red Hat CodeReady Linux Builder for Power, little endian 9 ppc64le o Red Hat CodeReady Linux Builder for ARM 64 10 aarch64 o Red Hat CodeReady Linux Builder for ARM 64 9 aarch64 o Red Hat CodeReady Linux Builder for IBM z Systems 10 s390x o Red Hat CodeReady Linux Builder for IBM z Systems 9 s390x Fixes (none) CVEs o CVE-2026-22007 o CVE-2026-22008 o CVE-2026-22013 o CVE-2026-22016 o CVE-2026-22018 o CVE-2026-22021 o CVE-2026-23865 o CVE-2026-26740 o CVE-2026-33416 o CVE-2026-33636 o CVE-2026-34268 o CVE-2026-34282 References o https://access.redhat.com/security/updates/classification/#important - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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