USN-8397-1: libjxl vulnerability

Publication date

8 June 2026

Overview

libjxl could be made to crash or run programs if it opened a specially crafted file.


Packages

  • jpeg-xl - Reference codec implementation for JPEG XL compressed raster image format

Details

It was discovered that libjxl did not properly handle certain crafted PBM
images. An attacker could possibly use this issue to cause libjxl to crash,
resulting in a denial of service, or execute arbitrary code.

It was discovered that libjxl did not properly handle certain crafted PBM
images. An attacker could possibly use this issue to cause libjxl to 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
26.04 LTS resolute libjxl-tools –  0.11.1-6ubuntu4.2
libjxl0.11 –  0.11.1-6ubuntu4.2
25.10 questing libjxl-tools –  0.11.1-6ubuntu1.2
libjxl0.11 –  0.11.1-6ubuntu1.2

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 ›