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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

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 obtain sensitive information.

(CVE-2025-50059)

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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