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USN-7046-1: Flatpak and Bubblewrap vulnerability

30 September 2024

Flatpak could be made to read and write files in locations it would not normally have access to.

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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.

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Releases

Packages

  • bubblewrap - setuid wrapper for unprivileged chroot and namespace manipulation
  • flatpak - Application deployment framework for desktop apps

Details

It was discovered that Flatpak incorrectly handled certain persisted
directories. An attacker could possibly use this issue to read
and write files in locations it would not normally have access to.
A patch was also needed to Bubblewrap in order to avoid race
conditions caused by this fix.

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 24.04
Ubuntu 22.04
Ubuntu 20.04

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