USN-7949-1: Sodium vulnerability

Publication date

8 January 2026

Overview

Sodium could be made to expose sensitive information.


Packages

  • 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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
25.10 questing libsodium23 –  1.0.18-1ubuntu0.25.10.1
25.04 plucky libsodium23 –  1.0.18-1ubuntu0.25.04.1
24.04 LTS noble libsodium23 –  1.0.18-1ubuntu0.24.04.1
22.04 LTS jammy libsodium23 –  1.0.18-1ubuntu0.22.04.1

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