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[USN-7412-3] GnuPG vulnerability

Posted on 09 December 2025
Ubuntu Security

==========================================================================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

--===============7444076399089778256==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

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