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Ubuntu Linux has been updated with two security updates: [USN-7690-1] for OpenJDK 17 vulnerabilities and [USN-7689-1] for Dnsmasq vulnerability.

[USN-7690-1] OpenJDK 17 vulnerabilities
[USN-7689-1] Dnsmasq vulnerability




[USN-7690-1] OpenJDK 17 vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7690-1
August 11, 2025

openjdk-17 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
- Ubuntu 18.04 LTS

Summary:

Several security issues were fixed in OpenJDK 17.

Software Description:
- openjdk-17: Open Source Java implementation

Details:

It was discovered that the 2D component of OpenJDK 17 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)

VMashroor Hasan Bhuiyan discovered that the JSSE component of OpenJDK 17
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 17 did not properly
manage network connections under certain circumstances. An attacker
could possibly use this issue to obtain sensitive information.
(CVE-2025-50059)

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://openjdk.org/groups/vulnerability/advisories/2025-07-15

Update instructions:

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

Ubuntu 25.04
openjdk-17-jdk 17.0.16+8~us1-0ubuntu1~25.04.1
openjdk-17-jdk-headless 17.0.16+8~us1-0ubuntu1~25.04.1
openjdk-17-jre 17.0.16+8~us1-0ubuntu1~25.04.1
openjdk-17-jre-headless 17.0.16+8~us1-0ubuntu1~25.04.1
openjdk-17-jre-zero 17.0.16+8~us1-0ubuntu1~25.04.1

Ubuntu 24.04 LTS
openjdk-17-jdk 17.0.16+8~us1-0ubuntu1~24.04.1
openjdk-17-jdk-headless 17.0.16+8~us1-0ubuntu1~24.04.1
openjdk-17-jre 17.0.16+8~us1-0ubuntu1~24.04.1
openjdk-17-jre-headless 17.0.16+8~us1-0ubuntu1~24.04.1
openjdk-17-jre-zero 17.0.16+8~us1-0ubuntu1~24.04.1

Ubuntu 22.04 LTS
openjdk-17-jdk 17.0.16+8~us1-0ubuntu1~22.04.1
openjdk-17-jdk-headless 17.0.16+8~us1-0ubuntu1~22.04.1
openjdk-17-jre 17.0.16+8~us1-0ubuntu1~22.04.1
openjdk-17-jre-headless 17.0.16+8~us1-0ubuntu1~22.04.1
openjdk-17-jre-zero 17.0.16+8~us1-0ubuntu1~22.04.1

Ubuntu 20.04 LTS
openjdk-17-jdk 17.0.16+8~us1-0ubuntu1~20.04.6
Available with Ubuntu Pro
openjdk-17-jdk-headless 17.0.16+8~us1-0ubuntu1~20.04.6
Available with Ubuntu Pro
openjdk-17-jre 17.0.16+8~us1-0ubuntu1~20.04.6
Available with Ubuntu Pro
openjdk-17-jre-headless 17.0.16+8~us1-0ubuntu1~20.04.6
Available with Ubuntu Pro
openjdk-17-jre-zero 17.0.16+8~us1-0ubuntu1~20.04.6
Available with Ubuntu Pro

Ubuntu 18.04 LTS
openjdk-17-jdk 17.0.16+8~us1-0ubuntu1~18.04.1
Available with Ubuntu Pro
openjdk-17-jdk-headless 17.0.16+8~us1-0ubuntu1~18.04.1
Available with Ubuntu Pro
openjdk-17-jre 17.0.16+8~us1-0ubuntu1~18.04.1
Available with Ubuntu Pro
openjdk-17-jre-headless 17.0.16+8~us1-0ubuntu1~18.04.1
Available with Ubuntu Pro
openjdk-17-jre-zero 17.0.16+8~us1-0ubuntu1~18.04.1
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-7690-1
CVE-2025-30749, CVE-2025-30754, CVE-2025-50059, CVE-2025-50106

Package Information:
https://launchpad.net/ubuntu/+source/openjdk-17/17.0.16+8~us1-0ubuntu1~25.04.1
https://launchpad.net/ubuntu/+source/openjdk-17/17.0.16+8~us1-0ubuntu1~24.04.1
https://launchpad.net/ubuntu/+source/openjdk-17/17.0.16+8~us1-0ubuntu1~22.04.1



[USN-7689-1] Dnsmasq vulnerability


==========================================================================
Ubuntu Security Notice USN-7689-1
August 11, 2025

dnsmasq vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS

Summary:

Dnsmasq could be made to crash if it received specially crafted network
traffic.

Software Description:
- dnsmasq: Small caching DNS proxy and DHCP/TFTP server

Details:

Xu Mingjie discovered that Dnsmasq did not correctly handle certain memory
operations. A remote attacker could possibly use this issue to cause a
denial of service.

Update instructions:

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

Ubuntu 14.04 LTS
dnsmasq 2.68-1ubuntu0.2+esm3
Available with Ubuntu Pro
dnsmasq-base 2.68-1ubuntu0.2+esm3
Available with Ubuntu Pro
dnsmasq-utils 2.68-1ubuntu0.2+esm3
Available with Ubuntu Pro

After a standard system update you need to restart dnsmasq to make
all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7689-1
CVE-2019-14834