Usn

Packages - flatpak - Application deployment framework for desktop apps Details It was discovered that Flatpak did not properly validate paths in sandbox-expose options. A malicious or compromised Flatpak app could use app-controlled symlinks to access arbitrary host files and gain code execution in the host context. This issue was addressed in Ubuntu Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-34078) It was discovered that Flatpak did not properly validate paths when removing outdated ld.so cache files. A malicious or compromised Flatpak app could use this issue to delete arbitrary files on the host. (CVE-2026-34079) It was discovered that Flatpak did not properly validate paths in sandbox-expose options. A malicious or compromised Flatpak app could use app-controlled symlinks to access arbitrary host files and gain code execution in the host context. This issue was addressed in Ubuntu Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-34078) It was discovered that Flatpak did not properly validate paths when removing outdated ld.so cache files. A malicious or compromised Flatpak app could use this issue to delete arbitrary files on the host. (CVE-2026-34079) 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 | flatpak – 1.14.6-1ubuntu0.1+esm1 | || | libflatpak0 – 1.14.6-1ubuntu0.1+esm1 | ||| | 22.04 LTS jammy | flatpak – 1.12.7-1ubuntu0.1+esm1 | || | libflatpak0 – 1.12.7-1ubuntu0.1+esm1 | ||| | 20.04 LTS focal | flatpak – 1.6.5-0ubuntu0.5+esm1 | || | libflatpak0 – 1.6.5-0ubuntu0.5+esm1 | ||| | 18.04 LTS bionic | flatpak – 1.0.9-0ubuntu0.4+esm1 | || | libflatpak0 – 1.0.9-0ubuntu0.4+esm1 | 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.