Home / mailings

PDF

[USN-7668-1] OpenJDK 21 vulnerabilities

Posted on 25 July 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7668-1
July 24, 2025

openjdk-21 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- 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 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)

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

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

--===============4689976138472122846==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

TOP