USN-8544-1: LuaJIT vulnerabilities

Publication date

14 July 2026

Overview

Several security issues were fixed in LuaJIT.


Packages

  • luajit - Just-In-Time Compiler for Lua

Details

It was discovered that LuaJIT incorrectly handled certain inputs. An attacker
could possibly use these issues to cause a crash, resulting in a denial of
service, or execute arbitrary code.

It was discovered that LuaJIT incorrectly handled certain inputs. An attacker
could possibly use these issues to cause a crash, resulting in a denial of
service, or 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
24.04 LTS noble libluajit-5.1-2 –  2.1.0+git20231223.c525bcb+dfsg-1ubuntu0.1
libluajit-5.1-common –  2.1.0+git20231223.c525bcb+dfsg-1ubuntu0.1
luajit –  2.1.0+git20231223.c525bcb+dfsg-1ubuntu0.1
22.04 LTS jammy libluajit-5.1-2 –  2.1.0~beta3+dfsg-6ubuntu0.1
libluajit-5.1-common –  2.1.0~beta3+dfsg-6ubuntu0.1
luajit –  2.1.0~beta3+dfsg-6ubuntu0.1
20.04 LTS focal libluajit-5.1-2 –  2.1.0~beta3+dfsg-5.1ubuntu0.20.04.1~esm1  
libluajit-5.1-common –  2.1.0~beta3+dfsg-5.1ubuntu0.20.04.1~esm1  
luajit –  2.1.0~beta3+dfsg-5.1ubuntu0.20.04.1~esm1  
18.04 LTS bionic libluajit-5.1-2 –  2.1.0~beta3+dfsg-5.1ubuntu0.18.04.1~esm1  
libluajit-5.1-common –  2.1.0~beta3+dfsg-5.1ubuntu0.18.04.1~esm1  
luajit –  2.1.0~beta3+dfsg-5.1ubuntu0.18.04.1~esm1  
16.04 LTS xenial libluajit-5.1-2 –  2.0.4+dfsg-1+deb9u1ubuntu0.1~esm1
libluajit-5.1-common –  2.0.4+dfsg-1+deb9u1ubuntu0.1~esm1
luajit –  2.0.4+dfsg-1+deb9u1ubuntu0.1~esm1
14.04 LTS trusty libluajit-5.1-2 –  2.0.2+dfsg-1ubuntu0.1~esm1  
libluajit-5.1-common –  2.0.2+dfsg-1ubuntu0.1~esm1  
luajit –  2.0.2+dfsg-1ubuntu0.1~esm1  

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