Ubuntu alert USN-7949-1 (libsodium)

From:
             
 
noreply+usn-bot@canonical.com
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-7949-1] Sodium vulnerability
Date:
             
 
Thu, 08 Jan 2026 16:59:38 +0000
Message-ID:
             
 
<E1vdtMI-0003Zs-J0@lists.ubuntu.com>
==========================================================================
Ubuntu Security Notice USN-7949-1
January 08, 2026

libsodium 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

Summary:

Sodium could be made to expose sensitive information.

Software Description:
- libsodium: Network communication, cryptography and signaturing library

Details:

It was discovered that Sodium incorrectly handled the elliptic curve point
validity check in certain atypical use cases. This could result in invalid
points being used, contrary to expectations.

Update instructions:

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

Ubuntu 25.10
  libsodium23                     1.0.18-1ubuntu0.25.10.1

Ubuntu 25.04
  libsodium23                     1.0.18-1ubuntu0.25.04.1

Ubuntu 24.04 LTS
  libsodium23                     1.0.18-1ubuntu0.24.04.1

Ubuntu 22.04 LTS
  libsodium23                     1.0.18-1ubuntu0.22.04.1

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

References:
  https://ubuntu.com/security/notices/USN-7949-1
  CVE-2025-69277

Package Information:
  https://launchpad.net/ubuntu/+source/libsodium/1.0.18-1ub...
  https://launchpad.net/ubuntu/+source/libsodium/1.0.18-1ub...
  https://launchpad.net/ubuntu/+source/libsodium/1.0.18-1ub...
  https://launchpad.net/ubuntu/+source/libsodium/1.0.18-1ub...


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