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Canonical Ubuntu Server 22.04 LTS (Jammy Jellyfish) Update Version 5.4.1+repack-2ubuntu0.1~esm1

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Update Summary

USN-8732-1 addresses a Minetest vulnerability where specially crafted network traffic from an authenticated user could crash the server or run programs. On Ubuntu Server 22.04 LTS, update `minetest-server` to 5.4.1+repack-2ubuntu0.1~esm1.

Update Details

Security

  • Minetest did not properly sanitize the Lua sandbox environment when using LuaJIT, allowing a malicious mod to escape the sandbox and execute arbitrary code with full file system access on the server.
  • An authenticated user could send specially crafted network traffic to crash Minetest or run programs.

Hints

  • A standard system update will apply the fix.
  • For Ubuntu Server 22.04 LTS (jammy), the corrected package is minetest-server 5.4.1+repack-2ubuntu0.1~esm1.

Product Information

Vendor: Canonical

Product: Ubuntu Server

Product type: Software

Application category: Utilities

Platform: Linux

Variant: 22.04 LTS (Jammy Jellyfish)

Version: 5.4.1+repack-2ubuntu0.1~esm1

Vendor release date: Sep 7, 2026

Original release notes: View on vendor site

Published on updatealert.io: Sep 8, 2026

Description: Server operating system for Linux infrastructure and workloads.

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