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Ubuntu 25.04/24.10: USN-7531-1 critical: openjdk-21-crac security issues

ubuntu
Calendar Grey May 26, 2025
Dist Ubuntu Esm H88
Critical vulnerabilities in openjdk-21-crac addressed, crucial for Ubuntu users on versions 25.04 and 24.10. Prompt update advised for protection!
Several security issues were fixed in CRaC JDK 21.

Summary

Several security issues were fixed in CRaC JDK 21.

Software Description:

- openjdk-21-crac: Open Source Java implementation with Coordinated Restore at Checkpoints

Details:

Alicja Kario discovered that the JSSE component of CRaC JDK 21 incorrectly

handled RSA padding. An Attacker could possibly use this issue to obtain

sensitive information. (CVE-2025-21587)

It was discovered that the Compiler component of CRaC JDK 21 incorrectly

handled compiler transformations. An attacker could possibly use this

issue to cause a denial of service or execute arbitrary code.

(CVE-2025-30691)

It was discovered that the 2D component of CRaC JDK 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-2025-30698)

In addition to security fixes, the updated packages contain bug fixes, new

features, and possibly incompatible changes.

Please see the following for more information:

https://o...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu java security openjdk sensitivity exposure

Update Instructions

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

Ubuntu 25.04
  openjdk-21-crac-jdk             21.0.7+6.1-0ubuntu1~25.04
  openjdk-21-crac-jdk-headless    21.0.7+6.1-0ubuntu1~25.04
  openjdk-21-crac-jre             21.0.7+6.1-0ubuntu1~25.04
  openjdk-21-crac-jre-headless    21.0.7+6.1-0ubuntu1~25.04
  openjdk-21-crac-jre-zero        21.0.7+6.1-0ubuntu1~25.04

Ubuntu 24.10
  openjdk-21-crac-jdk             21.0.7+6.1-0ubuntu1~24.10
  openjdk-21-crac-jdk-headless    21.0.7+6.1-0ubuntu1~24.10
  openjdk-21-crac-jre             21.0.7+6.1-0ubuntu1~24.10
  openjdk-21-crac-jre-headless    21.0.7+6.1-0ubuntu1~24.10
  openjdk-21-crac-jre-zero        21.0.7+6.1-0ubuntu1~24.10

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-7531-1

CVE-2025-21587, CVE-2025-30691, CVE-2025-30698

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7531-1

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu java security openjdk sensitivity exposure

Package Information

https://launchpad.net/ubuntu/+source/openjdk-21-crac/21.0.7+6.1-0ubuntu1~25.04
https://launchpad.net/ubuntu/+source/openjdk-21-crac/21.0.7+6.1-0ubuntu1~24.10

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