Ubuntu Security Notices USN-8397-1 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. Releases 26.04 LTS 25.10 Open side navigation Close side navigation Packages Details Update instructions References 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. Get Ubuntu Pro References CVE-2025-70103 CVE-2025-70103