CVE-2026-3888 | Canonical Ubuntu Linux up to 2.75.0 snapd /tmp privilege chaining

A vulnerability described as critical has been identified in Canonical Ubuntu Linux up to 2.75.0. This affects an unknown function of the file /tmp of the component snapd. Executing a manipulation can lead to privilege chaining.

This vulnerability is registered as CVE-2026-3888. The attack needs to be launched locally. No exploit is available.

Upgrading the affected component is recommended.