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[USN-8544-1] LuaJIT vulnerabilities

Posted on 15 July 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8544-1
July 14, 2026

luajit vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in LuaJIT.

Software Description:
- 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.

Update instructions:

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

Ubuntu 24.04 LTS
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

Ubuntu 22.04 LTS
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

Ubuntu 20.04 LTS
libluajit-5.1-2 2.1.0~beta3+dfsg-5.1ubuntu0.20.04.1~esm1
Available with Ubuntu Pro
libluajit-5.1-common 2.1.0~beta3+dfsg-5.1ubuntu0.20.04.1~esm1
Available with Ubuntu Pro
luajit 2.1.0~beta3+dfsg-5.1ubuntu0.20.04.1~esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
libluajit-5.1-2 2.1.0~beta3+dfsg-5.1ubuntu0.18.04.1~esm1
Available with Ubuntu Pro
libluajit-5.1-common 2.1.0~beta3+dfsg-5.1ubuntu0.18.04.1~esm1
Available with Ubuntu Pro
luajit 2.1.0~beta3+dfsg-5.1ubuntu0.18.04.1~esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
libluajit-5.1-2 2.0.4+dfsg-1+deb9u1ubuntu0.1~esm1
Available with Ubuntu Pro
libluajit-5.1-common 2.0.4+dfsg-1+deb9u1ubuntu0.1~esm1
Available with Ubuntu Pro
luajit 2.0.4+dfsg-1+deb9u1ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 14.04 LTS
libluajit-5.1-2 2.0.2+dfsg-1ubuntu0.1~esm1
Available with Ubuntu Pro
libluajit-5.1-common 2.0.2+dfsg-1ubuntu0.1~esm1
Available with Ubuntu Pro
luajit 2.0.2+dfsg-1ubuntu0.1~esm1
Available with Ubuntu Pro

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

References:
https://ubuntu.com/security/notices/USN-8544-1
CVE-2024-25176, CVE-2024-25177, CVE-2024-25178

Package Information:
https://launchpad.net/ubuntu/+source/luajit/2.1.0+git20231223.c525bcb+dfsg-1ubuntu0.1
https://launchpad.net/ubuntu/+source/luajit/2.1.0~beta3+dfsg-6ubuntu0.1

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