========================================================================== Ubuntu Security Notice USN-7916-2 January 15, 2026
python-apt regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
USN-7916-1 introduced a regression in python-apt
Software Description:
- python-apt: Python interface to libapt-pkg
Details:
USN-7916-1 fixed a vulnerability in python-apt. The update had a
PEP 440 incompatible version. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
Julian Andres Klode discovered that python-apt incorrectly handled
deb822 configuration files. An attacker could use this issue to cause
python-apt to crash, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
python-apt 2.0.1ubuntu0.20.04.2esm2
Available with Ubuntu Pro
python-apt-common 2.0.1ubuntu0.20.04.2esm2
Available with Ubuntu Pro
python-apt-dev 2.0.1ubuntu0.20.04.2esm2
Available with Ubuntu Pro
python-apt-doc 2.0.1ubuntu0.20.04.2esm2
Available with Ubuntu Pro
python3-apt 2.0.1ubuntu0.20.04.2esm2
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-7916-2
https://ubuntu.com/security/notices/USN-7916-1
CVE-2025-6966, https://bugs.launchpad.net/bugs/2137070
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