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Ubuntu 25.10 OpenJDK 25 Critical RCE Information Disclosure 7996-1

ubuntu
Calendar Grey February 3, 2026
Dist Ubuntu Esm H88
Several security fixes address critical issues in OpenJDK 25, including remote code execution and data leakage risks.
Several security issues were fixed in CRaC JDK 25.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 Summary: Several security issues were fixed in CRaC JDK 25. Software Description: - openjdk-25-crac: Open Source Java implementation with Coordinated Restore at Checkpoints Details: It was discovered that the RMI component of CRaC JDK 25 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 CRaC JDK 25 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 CRaC JDK 25 was suceptible to a CRLF injection vulnerability via the HttpServer class. An unauthenticated remote attacker co...

Read the Full Advisory

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 openjdk-25-crac-jdk 25.0.2+10-0ubuntu1~25.10 openjdk-25-crac-jdk-headless 25.0.2+10-0ubuntu1~25.10 openjdk-25-crac-jre 25.0.2+10-0ubuntu1~25.10 openjdk-25-crac-jre-headless 25.0.2+10-0ubuntu1~25.10 openjdk-25-crac-jre-zero 25.0.2+10-0ubuntu1~25.10 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-7996-1

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

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7996-1

Package Information

https://launchpad.net/ubuntu/+source/openjdk-25-crac/25.0.2+10-0ubuntu1~25.10

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