USN-7254-1: OpenJDK 21 vulnerability

USN-7254-1: OpenJDK 21 vulnerability
5 February 2025

• OpenJDK 21 could be made to expose sensitive information over the network.

Releases
Ubuntu 24.10 Ubuntu 24.04 LTS Ubuntu 22.04 LTS Ubuntu 20.04 LTS

Packages
openjdk-21 - Open Source Java implementation

Details
It was discovered that the Hotspot component of OpenJDK 21 did not properly
handle API access under certain circumstances. An unauthenticated attacker
could possibly use this issue to access unauthorized resources and expose
sensitive information.

Update instructions
The problem can be corrected by updating your system to the following package versions:

Ubuntu 24.10

• openjdk-21-jdk - 21.0.6+7-1~24.10.1
• openjdk-21-jdk-headless - 21.0.6+7-1~24.10.1
• openjdk-21-jre - 21.0.6+7-1~24.10.1
• openjdk-21-jre-headless - 21.0.6+7-1~24.10.1
• openjdk-21-jre-zero - 21.0.6+7-1~24.10.1
  Ubuntu 24.04
• openjdk-21-jdk - 21.0.6+7-1~24.04.1
• openjdk-21-jdk-headless - 21.0.6+7-1~24.04.1
• openjdk-21-jre - 21.0.6+7-1~24.04.1
• openjdk-21-jre-headless - 21.0.6+7-1~24.04.1
• openjdk-21-jre-zero - 21.0.6+7-1~24.04.1
  Ubuntu 22.04
• openjdk-21-jdk - 21.0.6+7-1~22.04.1
• openjdk-21-jdk-headless - 21.0.6+7-1~22.04.1
• openjdk-21-jre - 21.0.6+7-1~22.04.1
• openjdk-21-jre-headless - 21.0.6+7-1~22.04.1
• openjdk-21-jre-zero - 21.0.6+7-1~22.04.1
  Ubuntu 20.04
• openjdk-21-jdk - 21.0.6+7-1~20.04.1
• openjdk-21-jdk-headless - 21.0.6+7-1~20.04.1
• openjdk-21-jre - 21.0.6+7-1~20.04.1
• openjdk-21-jre-headless - 21.0.6+7-1~20.04.1
• openjdk-21-jre-zero - 21.0.6+7-1~20.04.1

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.