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[USN-7946-1] GnuPG vulnerability

Posted on 08 January 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7946-1
January 08, 2026

gnupg2 vulnerability
==========================================================================
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
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

GnuPG could be made to crash or run programs if it received
specially crafted network traffic.

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

Details:

It was discovered that GnuPG incorrectly handled crafted input.
A remote attacker could possibly use this issue to crash the program,
or execute arbitrary code.

Update instructions:

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

Ubuntu 25.10
gnupg 2.4.8-2ubuntu2.1
gnupg2 2.4.8-2ubuntu2.1
gpg 2.4.8-2ubuntu2.1

Ubuntu 25.04
gnupg 2.4.4-2ubuntu23.2
gnupg2 2.4.4-2ubuntu23.2
gpg 2.4.4-2ubuntu23.2

Ubuntu 24.04 LTS
gnupg 2.4.4-2ubuntu17.4
gnupg2 2.4.4-2ubuntu17.4
gpg 2.4.4-2ubuntu17.4

Ubuntu 22.04 LTS
gnupg 2.2.27-3ubuntu2.5
gnupg2 2.2.27-3ubuntu2.5
gpg 2.2.27-3ubuntu2.5

Ubuntu 20.04 LTS
gnupg 2.2.19-3ubuntu2.5+esm1
Available with Ubuntu Pro
gnupg2 2.2.19-3ubuntu2.5+esm1
Available with Ubuntu Pro
gpg 2.2.19-3ubuntu2.5+esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
gnupg 2.2.4-1ubuntu1.6+esm2
Available with Ubuntu Pro
gnupg2 2.2.4-1ubuntu1.6+esm2
Available with Ubuntu Pro
gpg 2.2.4-1ubuntu1.6+esm2
Available with Ubuntu Pro

Ubuntu 16.04 LTS
gnupg2 2.1.11-6ubuntu2.1+esm3
Available with Ubuntu Pro
gpgv2 2.1.11-6ubuntu2.1+esm3
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-7946-1
CVE-2025-68973

Package Information:
https://launchpad.net/ubuntu/+source/gnupg2/2.4.8-2ubuntu2.1
https://launchpad.net/ubuntu/+source/gnupg2/2.4.4-2ubuntu23.2
https://launchpad.net/ubuntu/+source/gnupg2/2.4.4-2ubuntu17.4
https://launchpad.net/ubuntu/+source/gnupg2/2.2.27-3ubuntu2.5

--===============2646609577787734142==Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature

 

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