USN-5191-1: Flatpak vulnerability

14 December 2021

A system hardening measure could be bypassed.

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Releases

Packages

  • flatpak - Application deployment framework for desktop apps

Details

It was discovered that Flatpak incorrectly handled certain AF_UNIX sockets.
An attacker could use this to specially craft a Flatpak application that
could escape sandbox confinement.

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.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 21.10
Ubuntu 21.04
Ubuntu 20.04
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

References

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Further reading