USN-7969-1: Dungeon Crawl Stone Stoup vulnerability

Publication date

19 January 2026

Overview

Dungeon Crawl Stone Soup could be made to execute arbitrary code if it opened a specially crafted file.


Packages

  • crawl - a text-based roguelike game

Details

David Mendenhall discovered that Dungeon Crawl Stone Soup was incorrectly
handling Lua bytecode embedded in an uploaded .crawlrc file. An attacker
could possibly use this issue to execute arbitrary code.

David Mendenhall discovered that Dungeon Crawl Stone Soup was incorrectly
handling Lua bytecode embedded in an uploaded .crawlrc file. An attacker
could possibly use this issue to execute arbitrary code.

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
20.04 LTS focal crawl –  2:0.24.0-1ubuntu0.1~esm1  
crawl-common –  2:0.24.0-1ubuntu0.1~esm1  
crawl-tiles –  2:0.24.0-1ubuntu0.1~esm1  
crawl-tiles-data –  2:0.24.0-1ubuntu0.1~esm1  
18.04 LTS bionic crawl –  2:0.21.1-1ubuntu0.1~esm1  
crawl-common –  2:0.21.1-1ubuntu0.1~esm1  
crawl-tiles –  2:0.21.1-1ubuntu0.1~esm1  
crawl-tiles-data –  2:0.21.1-1ubuntu0.1~esm1  
16.04 LTS xenial crawl –  2:0.17.1-1ubuntu0.1~esm1  
crawl-common –  2:0.17.1-1ubuntu0.1~esm1  
crawl-tiles –  2:0.17.1-1ubuntu0.1~esm1  
crawl-tiles-data –  2:0.17.1-1ubuntu0.1~esm1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

Talk to a member of the team ›