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[USN-8708-2] sudo-rs vulnerability

Posted on 20 October 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8708-2
October 20, 2026

rust-sudo-rs vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 26.10

Summary:

sudo-rs could be made to run programs as an administrator.

Software Description:
- rust-sudo-rs: Rust-based sudo and su implementations

Details:

USN-8708-1 fixed a vulnerability in sudo-rs. This update provides the
corresponding fix for Ubuntu 26.10.

Original advisory details:

It was discovered that sudo-rs incorrectly handled time-of-check vs time-
of-use conditions in sudoedit. A local attacker with permission to edit
specific files using sudoedit could use this issue to place files in
arbitrary directories, and possibly escalate their privileges. This issue
only affected systems configured to grant fine-grained sudoedit file
editing permissions, which is not the default configuration.

Update instructions:

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

Ubuntu 26.10
sudo-rs 0.2.14-1ubuntu4.1

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

References:
https://ubuntu.com/security/notices/USN-8708-2
https://ubuntu.com/security/notices/USN-8708-1
https://bugs.launchpad.net/bugs/2165142

Package Information:
https://launchpad.net/ubuntu/+source/rust-sudo-rs/0.2.14-1ubuntu4.1

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