[USN-7946-2] GnuPG vulnerability

[noreply+usn-bot at canonical.com]

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Ubuntu Security Notice USN-7946-2
January 08, 2026

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

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

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

Details:

USN-7946-1 fixed vulnerabilities in GnuPG 2.x.
This update provides the corresponding updates for GnuPG 1.x.

Original advisory 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 16.04 LTS
  gnupg                           1.4.20-1ubuntu3.3+esm3
                                  Available with Ubuntu Pro
  gpgv                            1.4.20-1ubuntu3.3+esm3
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  gnupg                           1.4.16-1ubuntu2.6+esm2
                                  Available with Ubuntu Pro
  gpgv                            1.4.16-1ubuntu2.6+esm2
                                  Available with Ubuntu Pro

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

References:
  https://ubuntu.com/security/notices/USN-7946-2
  https://ubuntu.com/security/notices/USN-7946-1
  CVE-2025-68973
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