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Ubuntu 25.10 OpenJDK 21 Critical Code Exec Issue USN-8002-1

ubuntu
Calendar Grey February 3, 2026
Dist Ubuntu Esm H88
Critical vulnerabilities in OpenJDK 21 affecting multiple Ubuntu releases require immediate security updates and fixes.
Several security issues were fixed in OpenJDK 21.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - 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 RMI component of OpenJDK 21 would establish RMI TCP endpoint connections to a remote host without setting an endpoint identification algorithm. An unauthenticated remote attacker could possibly use this issue to steal sensitive information. (CVE-2026-21925) Mingijung discovered that the AWT and JavaFX componenets of OpenJDK 21 could run programs if Desktop.browse() was supplied a filename as a URI. An unauthenticated remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-21932) Zhihui Chen discovered that the Networking component of OpenJDK 21 was suceptible to a CRLF injection vulnerability via the HttpServer class. An unauthenticated remote att...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory information leak critical code execution Ubuntu openjdk

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 openjdk-21-jdk 21.0.10+7-1~25.10 openjdk-21-jdk-headless 21.0.10+7-1~25.10 openjdk-21-jre 21.0.10+7-1~25.10 openjdk-21-jre-headless 21.0.10+7-1~25.10 openjdk-21-jre-zero 21.0.10+7-1~25.10 Ubuntu 24.04 LTS openjdk-21-jdk 21.0.10+7-1~24.04 openjdk-21-jdk-headless 21.0.10+7-1~24.04 openjdk-21-jre 21.0.10+7-1~24.04 openjdk-21-jre-headless 21.0.10+7-1~24.04 openjdk-21-jre-zero 21.0.10+7-1~24.04 Ubuntu 22.04 LTS openjdk-21-jdk 21.0.10+7-1~22.04 openjdk-21-jdk-headless 21.0.10+7-1~22.04 openjdk-21-jre 21.0.10+7-1~22.04 openjdk-21-jre-headless 21.0.10+7-1~22.04 openjdk-21-jre-zero 21.0.10+7-1~22.04 Ubuntu 20.04 LTS openjdk-21-jdk 21.0.10+7-1~20.04 Available with Ubuntu Pro openjdk-21-jdk-headless 21.0.10+7-1~20.04 Available with Ubuntu Pro openjdk-21-jre 21.0.10+7-1~20.04 Available with Ubuntu Pro openjdk-21-jre-headless 21.0.10+7-1~20.04 Available with Ubuntu Pro openjdk-21-jre-zero 21.0.10+7-1~20.04 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-8002-1

CVE-2026-21925, CVE-2026-21932, CVE-2026-21933, CVE-2026-21945

Severity
critical
Lowest
Low
Medium
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Critical

Ubuntu Security Notice USN-8002-1

Topics%20covered

Topics Covered

security advisory information leak critical code execution Ubuntu openjdk

Package Information

https://launchpad.net/ubuntu/+source/openjdk-21/21.0.10+7-1~25.10 https://launchpad.net/ubuntu/+source/openjdk-21/21.0.10+7-1~22.04

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