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Ubuntu 25.04: OpenJDK 21 Severe Memory Issue USN-7668-1 CVE-2025-50106

ubuntu
Calendar Grey July 25, 2025
Dist Ubuntu Esm H88
Vital security patch released for OpenJDK 21 addressing memory handling and TLS vulnerabilities across various Ubuntu distributions.
Several security issues were fixed in OpenJDK 21.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in OpenJDK 21. Software Description: - openjdk-21: Open Source Java implementation Details: It was discovered that the 2D component of OpenJDK 21 did not properly manage memory under certain circumstances. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2025-30749, CVE-2025-50106) Mashroor Hasan Bhuiyan discovered that the JSSE component of OpenJDK 21 did not properly manage TLS 1.3 handshakes under certain circumstances. An attacker could possibly use this issue to obtain sensitive information. (CVE-2025-30754) Martin van Wingerden and Violeta Georgieva of Broadcom discovered that the Networking component of OpenJDK 24 did not properly manage network connections under certain circumstances. An attacker could possibly use this issue to ...

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Topics%20covered

Topics Covered

security advisory denial of service Ubuntu memory management openjdk tls handshake

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.04 openjdk-21-jdk 21.0.8+9~us1-0ubuntu1~25.04.1 openjdk-21-jdk-headless 21.0.8+9~us1-0ubuntu1~25.04.1 openjdk-21-jre 21.0.8+9~us1-0ubuntu1~25.04.1 openjdk-21-jre-headless 21.0.8+9~us1-0ubuntu1~25.04.1 openjdk-21-jre-zero 21.0.8+9~us1-0ubuntu1~25.04.1 Ubuntu 24.04 LTS openjdk-21-jdk 21.0.8+9~us1-0ubuntu1~24.04.1 openjdk-21-jdk-headless 21.0.8+9~us1-0ubuntu1~24.04.1 openjdk-21-jre 21.0.8+9~us1-0ubuntu1~24.04.1 openjdk-21-jre-headless 21.0.8+9~us1-0ubuntu1~24.04.1 openjdk-21-jre-zero 21.0.8+9~us1-0ubuntu1~24.04.1 Ubuntu 22.04 LTS openjdk-21-jdk 21.0.8+9~us1-0ubuntu1~22.04.1 openjdk-21-jdk-headless 21.0.8+9~us1-0ubuntu1~22.04.1 openjdk-21-jre 21.0.8+9~us1-0ubuntu1~22.04.1 openjdk-21-jre-headless 21.0.8+9~us1-0ubuntu1~22.04.1 openjdk-21-jre-zero 21.0.8+9~us1-0ubuntu1~22.04.1 Ubuntu 20.04 LTS openjdk-21-jdk 21.0.8+9~us1-0ubuntu1~20.04.1 Available with Ubuntu Pro openjdk-21-jdk-headless 21.0.8+9~us1-0ubuntu1~20.04.1 Available with Ubuntu Pro openjdk-21-jre 21.0.8+9~us1-0ubuntu1~20.04.1 Available with Ubuntu Pro openjdk-21-jre-headless 21.0.8+9~us1-0ubuntu1~20.04.1 Available with Ubuntu Pro openjdk-21-jre-zero 21.0.8+9~us1-0ubuntu1~20.04.1 Available with Ubuntu Pro This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart Java applications to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7668-1

CVE-2025-30749, CVE-2025-30754, CVE-2025-50059, CVE-2025-50106

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7668-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu memory management openjdk tls handshake

Package Information

https://launchpad.net/ubuntu/+source/openjdk-21/21.0.8+9~us1-0ubuntu1~25.04.1 https://launchpad.net/ubuntu/+source/openjdk-21/21.0.8+9~us1-0ubuntu1~24.04.1 https://launchpad.net/ubuntu/+source/openjdk-21/21.0.8+9~us1-0ubuntu1~22.04.1

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