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Maher Azzouzi discovered that LXC did not correctly handle logging certain failure messages, potentially allowing an attacker to leak sensitive information (CVE-2022-47952). Sam Sanoop discovered that LXC did not correctly handle certain forms of user authorization, which could allow an attacker to cause a denial of service (CVE-2026-39402).
The issues affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS.
Updates required specific package versions depending on the release:
For 24.04 LTS noble, packages like liblxc-common, lxc, and others were updated to versions corresponding to liblxc-common – 1:5.0.3-2ubuntu7.3+esm1.
For 22.04 LTS jammy, packages like liblxc-common, lxc, and others were updated to versions corresponding to liblxc-common – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1.
For 18.04 LTS bionic, packages like liblxc-common were updated to version 3.0.3-0ubuntu1~18.04.3+esm1.
For 16.04 LTS xenial, packages like liblxc1 and lxc were updated to versions corresponding to 2.0.11-0ubuntu1~16.04.3+esm1.

The narrative reveals a recurring theme in the maintenance of containerization software: subtle failures in fundamental security mechanisms—logging and authorization—that carry tangible risk for information disclosure or service disruption. The pattern suggests that the complexity inherent in managing cross-system dependencies, especially across multiple Linux distributions, creates friction points where deep operational details can be overlooked during development or updates. The fact that distinct vulnerabilities were found affecting different aspects (information leakage vs. denial of service) highlights a structural gap in ensuring comprehensive security review across all features of the LXC subsystem. This necessitates an examination of whether dependency management practices adequately account for complex, interacting behaviors rather than treating components in isolation.
Patterns detected: ARC-0024 Ambiguity, ARC-0013 Pattern Recognition