It was discovered that sandbox restrictions in Flatpak, an application deployment framework for desktop apps, could be bypassed for a Flatpak app with direct access to AF_UNIX sockets, by manipulating the VFS using mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter. Details can be found in the upstream advisory at https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q For the stable distribution (bullseye), this problem has been fixed in version 1.10.5-0+deb11u1. We recommend that you upgrade your flatpak packages. For the detailed security status of flatpak please refer to its security tracker page at: https://security-tracker.debian.org/tracker/flatpak
It was discovered that sandbox restrictions in Flatpak, an application deployment framework for desktop apps, could be bypassed for a Flatpak app with direct access to AF_UNIX sockets, by manipulating the VFS using mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter.
Details can be found in the upstream advisory at https://github.com/flatpak/flatpak/security/advisories/GHSA-67h7-w3jq-vh4q
For the stable distribution (bullseye), this problem has been fixed in version 1.10.5-0+deb11u1.
We recommend that you upgrade your flatpak packages.
For the detailed security status of flatpak please refer to its security tracker page at: https://security-tracker.debian.org/tracker/flatpak
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