Ubuntu Security Notices USN-8600-1 USN-8600-1: libXpm vulnerability Publication date 23 July 2026 Overview libXpm could be made to crash if it opened a specially crafted file. Releases 26.04 LTS 24.04 LTS 22.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages libxpm - X11 pixmap library Details Naoki Wakamatsu discovered that libXpm did not properly validate file boundaries when processing XPM image files. An attacker could possibly use this issue to cause libXpm to crash, resulting in a denial of service. Naoki Wakamatsu discovered that libXpm did not properly validate file boundaries when processing XPM image files. An attacker could possibly use this issue to cause libXpm to crash, resulting in a denial of service. 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 libxpm4 – 1:3.5.17-1ubuntu0.26.04.1 xpmutils – 1:3.5.17-1ubuntu0.26.04.1 24.04 LTS noble libxpm4 – 1:3.5.17-1ubuntu0.24.04.1 xpmutils – 1:3.5.17-1ubuntu0.24.04.1 22.04 LTS jammy libxpm4 – 1:3.5.12-1ubuntu0.22.04.3 xpmutils – 1:3.5.12-1ubuntu0.22.04.3 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-2026-4367 CVE-2026-4367