[USN-7412-1] GnuPG vulnerability

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==========================================================================
Ubuntu Security Notice USN-7412-1
April 03, 2025

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

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

- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

GnuPG could be made to corrupt a keyring.

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

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 24.10
gnupg 2.4.4-2ubuntu18.2
gnupg2 2.4.4-2ubuntu18.2
gpg 2.4.4-2ubuntu18.2

Ubuntu 24.04 LTS
gnupg 2.4.4-2ubuntu17.2
gnupg2 2.4.4-2ubuntu17.2
gpg 2.4.4-2ubuntu17.2

Ubuntu 22.04 LTS
gnupg 2.2.27-3ubuntu2.3
gnupg2 2.2.27-3ubuntu2.3
gpg 2.2.27-3ubuntu2.3

Ubuntu 20.04 LTS
gnupg 2.2.19-3ubuntu2.4
gnupg2 2.2.19-3ubuntu2.4
gpg 2.2.19-3ubuntu2.4

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

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

Package Information:
https://launchpad.net/ubuntu/+source/gnupg2/2.4.4-2ubuntu18.2
https://launchpad.net/ubuntu/+source/gnupg2/2.4.4-2ubuntu17.2
https://launchpad.net/ubuntu/+source/gnupg2/2.2.27-3ubuntu2.3
https://launchpad.net/ubuntu/+source/gnupg2/2.2.19-3ubuntu2.4