CVE-2024-32462: Fedoraproject Fedora

High severity, CVSS 8.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be given a command to run in the specified Flatpak app, optionally along with some arguments. However it is possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It's possible to pass an arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg-desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9, 1.12.9, and 1.14.6.

Affected products

• Fedoraproject Fedora: version 39 only; version 40 only
• Flatpak Flatpak: before 1.10.9 (fixed in 1.10.9); from 1.12.0, before 1.12.9 (fixed in 1.12.9); from 1.14.0, before 1.14.6 (fixed in 1.14.6); from 1.15.0, before 1.15.8 (fixed in 1.15.8)

Published 2024-04-18. Last modified 2026-06-17.