Red Hat Security Advisory: OpenJDK 21.0.8 Security Update for Portable Linux Builds
Red Hat has released an important security update for the Red Hat build of OpenJDK 21 (version 21. 0. 8) for portable Linux. This update replaces version 21. 0. 7 and addresses multiple security vulnerabilities related to glyph drawing, TLS protocol support, and HTTP client header handling. The advisory references four CVEs: CVE-2025-30749, CVE-2025-30754, CVE-2025-50059, and CVE-2025-50106. No CVSS scores are provided in the advisory, but the update is rated as having an important security impact. No known exploits in the wild have been reported. Users are advised to apply this update after ensuring all prior errata are installed.
AI Analysis
Technical Summary
The Red Hat build of OpenJDK 21.0.8 for portable Linux includes security and bug fixes that address four vulnerabilities: CVE-2025-30749 and CVE-2025-50106 improve glyph drawing functionality; CVE-2025-30754 enhances TLS protocol support; and CVE-2025-50059 improves HTTP client header handling. These fixes replace the previous OpenJDK 21.0.7 build. The advisory does not provide CVSS scores but classifies the update as important. The vulnerabilities relate to Java runtime and SDK components distributed by Red Hat. No exploits are currently known in the wild. The update is available from Red Hat with instructions to apply it after prior errata.
Potential Impact
The vulnerabilities addressed affect the OpenJDK 21 runtime and SDK, potentially impacting Java applications running on Red Hat portable Linux builds. The issues involve glyph rendering, TLS protocol handling, and HTTP client header processing, which could affect application stability, security of encrypted communications, and HTTP client behavior. The advisory rates the security impact as important, indicating a significant but not critical risk. No known exploitation has been reported, reducing immediate threat urgency.
Mitigation Recommendations
Red Hat has released OpenJDK 21.0.8 as a security update that fixes the identified vulnerabilities. Users should apply this update to replace version 21.0.7 after ensuring all previously released errata relevant to their system are installed. Detailed update instructions are available in the Red Hat knowledge base article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
Red Hat Security Advisory: OpenJDK 21.0.8 Security Update for Portable Linux Builds
Description
Red Hat has released an important security update for the Red Hat build of OpenJDK 21 (version 21. 0. 8) for portable Linux. This update replaces version 21. 0. 7 and addresses multiple security vulnerabilities related to glyph drawing, TLS protocol support, and HTTP client header handling. The advisory references four CVEs: CVE-2025-30749, CVE-2025-30754, CVE-2025-50059, and CVE-2025-50106. No CVSS scores are provided in the advisory, but the update is rated as having an important security impact. No known exploits in the wild have been reported. Users are advised to apply this update after ensuring all prior errata are installed.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Red Hat build of OpenJDK 21.0.8 for portable Linux includes security and bug fixes that address four vulnerabilities: CVE-2025-30749 and CVE-2025-50106 improve glyph drawing functionality; CVE-2025-30754 enhances TLS protocol support; and CVE-2025-50059 improves HTTP client header handling. These fixes replace the previous OpenJDK 21.0.7 build. The advisory does not provide CVSS scores but classifies the update as important. The vulnerabilities relate to Java runtime and SDK components distributed by Red Hat. No exploits are currently known in the wild. The update is available from Red Hat with instructions to apply it after prior errata.
Potential Impact
The vulnerabilities addressed affect the OpenJDK 21 runtime and SDK, potentially impacting Java applications running on Red Hat portable Linux builds. The issues involve glyph rendering, TLS protocol handling, and HTTP client header processing, which could affect application stability, security of encrypted communications, and HTTP client behavior. The advisory rates the security impact as important, indicating a significant but not critical risk. No known exploitation has been reported, reducing immediate threat urgency.
Mitigation Recommendations
Red Hat has released OpenJDK 21.0.8 as a security update that fixes the identified vulnerabilities. Users should apply this update to replace version 21.0.7 after ensuring all previously released errata relevant to their system are installed. Detailed update instructions are available in the Red Hat knowledge base article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:10874
- Cve Count
- 4
- Additional Cves
- ["CVE-2025-30754","CVE-2025-50059","CVE-2025-50106"]
- Cvss Version
- null
Threat ID: 6a1f4e87e29bf47b500805de
Added to database: 6/2/2026, 9:43:35 PM
Last enriched: 6/2/2026, 10:05:48 PM
Last updated: 6/3/2026, 4:59:14 AM
Views: 2
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