Ubuntu 6926 Published by

Ubuntu has released two separate security updates to address vulnerabilities in its system. The first update, USN-7914-1, fixes several security issues in WebKitGTK that could allow attackers to execute code or cause denial-of-service attacks. The second update, USN-7412-3, addresses a vulnerability in GnuPG on Ubuntu 18.04 LTS and 16.04 LTS that could be used to corrupt keyrings. Both updates require users to restart affected applications after installing the new packages.

[USN-7914-1] WebKitGTK vulnerabilities
[USN-7412-3] GnuPG vulnerability




[USN-7914-1] WebKitGTK vulnerabilities


==========================================================================
Ubuntu Security Notice USN-7914-1
December 08, 2025

webkit2gtk vulnerabilities
==========================================================================

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

- Ubuntu 25.10
- Ubuntu 25.04
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in WebKitGTK.

Software Description:
- webkit2gtk: Web content engine library for GTK+

Details:

Several security issues were discovered in the WebKitGTK Web and JavaScript
engines. If a user were tricked into viewing a malicious website, a remote
attacker could exploit a variety of issues related to web browser security,
including cross-site scripting attacks, denial of service attacks, and
arbitrary code execution.

Update instructions:

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

Ubuntu 25.10
libjavascriptcoregtk-4.1-0 2.50.2-0ubuntu0.25.10.2
libjavascriptcoregtk-6.0-1 2.50.2-0ubuntu0.25.10.2
libwebkit2gtk-4.1-0 2.50.2-0ubuntu0.25.10.2
libwebkitgtk-6.0-4 2.50.2-0ubuntu0.25.10.2

Ubuntu 25.04
libjavascriptcoregtk-4.1-0 2.50.2-0ubuntu0.25.04.2
libjavascriptcoregtk-6.0-1 2.50.2-0ubuntu0.25.04.2
libwebkit2gtk-4.1-0 2.50.2-0ubuntu0.25.04.2
libwebkitgtk-6.0-4 2.50.2-0ubuntu0.25.04.2

Ubuntu 24.04 LTS
libjavascriptcoregtk-4.1-0 2.50.2-0ubuntu0.24.04.2
libjavascriptcoregtk-6.0-1 2.50.2-0ubuntu0.24.04.2
libwebkit2gtk-4.1-0 2.50.2-0ubuntu0.24.04.2
libwebkitgtk-6.0-4 2.50.2-0ubuntu0.24.04.2

Ubuntu 22.04 LTS
libjavascriptcoregtk-4.0-18 2.50.2-0ubuntu0.22.04.2
libjavascriptcoregtk-4.1-0 2.50.2-0ubuntu0.22.04.2
libjavascriptcoregtk-6.0-1 2.50.2-0ubuntu0.22.04.2
libwebkit2gtk-4.0-37 2.50.2-0ubuntu0.22.04.2
libwebkit2gtk-4.1-0 2.50.2-0ubuntu0.22.04.2
libwebkitgtk-6.0-4 2.50.2-0ubuntu0.22.04.2

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK, such as Epiphany, to make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7914-1
CVE-2025-43392, CVE-2025-43425, CVE-2025-43427, CVE-2025-43429,
CVE-2025-43430, CVE-2025-43431, CVE-2025-43432, CVE-2025-43434,
CVE-2025-43440, CVE-2025-43443

Package Information:
https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.2-0ubuntu0.25.10.2
https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.2-0ubuntu0.25.04.2
https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.2-0ubuntu0.24.04.2
https://launchpad.net/ubuntu/+source/webkit2gtk/2.50.2-0ubuntu0.22.04.2



[USN-7412-3] GnuPG vulnerability


==========================================================================
Ubuntu Security Notice USN-7412-3
December 09, 2025

gnupg2 vulnerability
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

GnuPG could be made to corrupt a keyring.

Software Description:
- gnupg2: GNU privacy guard - a free PGP replacement

Details:

USN-7412-1 fixed a vulnerability in GnuPG. This update provides the
corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that GnuPG incorrectly handled importing keys with
certain crafted subkey data. If a user or automated system were tricked
into importing a specially crafted key, a remote attacker may prevent
users from importing other keys in the future.

Update instructions:

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

Ubuntu 18.04 LTS
gnupg 2.2.4-1ubuntu1.6+esm1
Available with Ubuntu Pro
gnupg2 2.2.4-1ubuntu1.6+esm1
Available with Ubuntu Pro
gpg 2.2.4-1ubuntu1.6+esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
gnupg2 2.1.11-6ubuntu2.1+esm2
Available with Ubuntu Pro
gpgv2 2.1.11-6ubuntu2.1+esm2
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7412-3
https://ubuntu.com/security/notices/USN-7412-2
https://ubuntu.com/security/notices/USN-7412-1
CVE-2025-30258