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Java-17-Openjdk Security Update — AlmaLinux 8 (ALSA-2026:88352)
ALSA-2026:88352 updates OpenJDK 17 on AlmaLinux 8 to 17.0.19.0.10-era builds with a large batch of JDK hardening fixes (38 CVEs including CVE-2026-83374 PKCS5 padding, CVE-2026-83376 TLS certificate handling, CVE-2026-83380 LDAP logins, CVE-2026-83381 SASL authentication), aggregate CVSS 5.9 with information-disclosure class items (CWE-200). Update with dnf update java-17-openjdk and restart Java applications.
High
5.9 CVSS
AlmaLinux 8
What this means under a SharedLicense license
The batch hardens Java's security primitives — TLS, SASL, LDAP login flows and crypto padding — the exact layers where disclosure flaws leak credentials or session material from applications using them.
The java-17-openjdk packages provide the OpenJDK 17 Java Runtime Environment and the OpenJDK 17 Java Software Development Kit. Security Fix(es): * JDK: Enhance PKCS5 padding (CVE-2026-83374) * JDK: Enhance TLS certificate handling (CVE-2026-83376) * JDK: Enhance LDAP logins (CVE-2026-83380) * JDK: Enhance SASL Authentication (CVE-2026-83381) * JDK: Enhance WebRowSets (CVE-2026-83387) * JDK: Enhance HTTP Client Response Handling (CVE-2026-83395) * JDK: Enhance XML Processing (CVE-2026-83400) * JDK: Enhance XPath Expressions (CVE-2026-87290) * JDK: Enhance Network Clients (CVE-2026-87292) * JDK: Enhance Certificate Name Checks (CVE-2026-87294) * JDK: Enhance Template Handling (CVE-2026-87367) * JDK: Enhance HTTP Client (CVE-2026-91332) * JDK: Enhance JPEG loading (CVE-2026-91334) * JDK: Enhance Image Handling (CVE-2026-91335) * JDK: Enhance TLS handshakes (CVE-2026-91373) * JDK: Enhance jstatd (CVE-2026-91374) * JDK: Enhance jmod handling (CVE-2026-91375) * JDK: Enhance JShell (CVE-2026-91379) * JDK: Enhance Preferences (CVE-2026-91380) * JDK: Enhance Image Processing (CVE-2026-91382) * JDK: Enhance HTTP client caching (CVE-2026-91394) * JDK: Enhance diagnostic sessions (CVE-2026-91397) * JDK: Enhance SOCKS5 support (CVE-2026-91398) * JDK: Enhance MIDI file handling (CVE-2026-91400) * JDK: Enhance zipfs (CVE-2026-91410) * JDK: Enhance font rendering (CVE-2026-91415) * JDK: Enhance GIF loading (CVE-2026-91418) * JDK: Enhance HTTP server parsing (CVE-2026-91451) * JDK: Enhance HTTP server (CVE-2026-91452) * JDK: Improve HTTP headers (CVE-2026-91453) * JDK: Enhance TLS Extensions (CVE-2026-91461) * JDK: Enhance krb5 tokens (CVE-2026-91462) * JDK: Enhance krb5 client (CVE-2026-91463) * JDK: Enhance Kerberos validation (CVE-2026-91464) * JDK: Enhance C2 comparisons (CVE-2026-91487) * JDK: Enhance Certificate Constraint Checking (CVE-2026-101516) 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. Note that the OpenJDK RPMs use the system certificate store, so the eMudhra CVEs (CVE-2026-91403 & CVE-2026-114820) should be resolved by updating the ca-certificates package.
Frequently Asked Questions
What is ALSA-2026:88352?
It is AlmaLinux's OpenJDK 17 erratum, applying 38 CVE fixes (CVE-2026-83374 through CVE-2026-114820) covering PKCS5 padding, TLS certificate handling, LDAP and SASL authentication, and C2 compiler improvements. Aggregate CVSS 5.9 (CWE-200 information disclosure among the classes).
Who is affected?
AlmaLinux 8 servers running Java 17 applications on OpenJDK 17 — Tomcat-deployed apps, Java services and build agents.
How do I apply the fix?
Run dnf update java-17-openjdk and restart Java applications; verify with java -version showing the updated build.
Are these flaws severe?
Individually mostly low-to-moderate (aggregate 5.9) — the value is the breadth: TLS, authentication and crypto-handling paths all hardened in one update, which is why it should ride your normal patch cycle rather than be deferred indefinitely.
References
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