Flatpak before 1.0.7, and 1.1.x and 1.2.x before 1.2.3, exposes /proc in the apply_extra script sandbox, which allows attackers to modify a host-side executable file.
openSUSE Leap 15.0 SUSE Linux Enterprise Desktop 15 SUSE Linux Enterprise High Performance Computing 15 SUSE Linux Enterprise Module for Desktop Applications 15 SUSE Linux Enterprise Server 15 SUSE Linux Enterprise Server for SAP Applications 15