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Debian Security Advisory DSA-4984-1                   [email protected]
https://www.debian.org/security/                     Salvatore Bonaccorso
October 12, 2021                      https://www.debian.org/security/faq
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Package        : flatpak
CVE ID         : CVE-2021-41133
Debian Bug     : 995935

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

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:

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]