A Schroot security update has been released for Ubuntu Linux 16.04 ESM, 18.04 LTS, 20.04 LTS, and 22.04 LTS.

USN-5584-1: Schroot vulnerability

=========================================================================
Ubuntu Security Notice USN-5584-1
August 29, 2022

schroot vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 ESM

Summary:

Schroot could be made to denial of service if certain
schroot names are used.

Software Description:
- schroot: Execute commands in a chroot environment

Details:

It was discovered that Schroot incorrectly handled certain Schroot names.
An attacker could possibly use this issue to break schroot's internal
state causing a denial of service.

Update instructions:

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

Ubuntu 22.04 LTS:
schroot 1.6.10-12ubuntu3.1

Ubuntu 20.04 LTS:
schroot 1.6.10-9ubuntu0.1

Ubuntu 18.04 LTS:
schroot 1.6.10-4ubuntu0.1

Ubuntu 16.04 ESM:
schroot 1.6.10-1ubuntu3+esm1

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

References:
  https://ubuntu.com/security/notices/USN-5584-1
CVE-2022-2787

Package Information:
  https://launchpad.net/ubuntu/+source/schroot/1.6.10-12ubuntu3.1
  https://launchpad.net/ubuntu/+source/schroot/1.6.10-9ubuntu0.1
  https://launchpad.net/ubuntu/+source/schroot/1.6.10-4ubuntu0.1