USN-8803-1: Sudo vulnerability

Publication date

22 September 2026

Overview

Sudo could allow a user to bypass command restrictions.


Packages

  • sudo - Provide limited super user privileges to specific users

Details

Guannan Wang, Zhanpeng Liu, and Guancheng Li discovered that Sudo failed to
apply intercept policy checks when commands were executed under certain
circumstances. A local attacker permitted to run specific commands could
possibly use this issue to bypass policy enforcement and logging, executing
unauthorized programs.

Guannan Wang, Zhanpeng Liu, and Guancheng Li discovered that Sudo failed to
apply intercept policy checks when commands were executed under certain
circumstances. A local attacker permitted to run specific commands could
possibly use this issue to bypass policy enforcement and logging, executing
unauthorized programs.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
26.04 LTS resolute sudo –  1.9.17p2-1ubuntu3.1
24.04 LTS noble sudo –  1.9.15p5-3ubuntu5.24.04.3
sudo-ldap –  1.9.15p5-3ubuntu5.24.04.3

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.


Have additional questions?

Talk to a member of the team ›