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Packages - lxc - Linux Containers userspace tools Details Maher Azzouzi discovered that LXC did not correctly handle logging certain failure messages. An attacker could possibly use this issue to leak sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2022-47952) Sam Sanoop discovered that LXC did not correctly handle certain forms of user authorization. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-39402) Maher Azzouzi discovered that LXC did not correctly handle logging certain failure messages. An attacker could possibly use this issue to leak sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2022-47952) Sam Sanoop discovered that LXC did not correctly handle certain forms of user authorization. An attacker could possibly use this issue to cause a denial of service. (CVE-2026-39402) Update instructions After a standard system update you need to restart LXC containers to 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 | liblxc-common – 1:6.0.6-1ubuntu1+esm1 | || | liblxc1t64 – 1:6.0.6-1ubuntu1+esm1 | ||| | libpam-cgfs – 1:6.0.6-1ubuntu1+esm1 | ||| | lxc – 1:6.0.6-1ubuntu1+esm1 | ||| | lxc-dev – 1:6.0.6-1ubuntu1+esm1 | ||| | lxc-tests – 1:6.0.6-1ubuntu1+esm1 | ||| | 24.04 LTS noble | liblxc-common – 1:5.0.3-2ubuntu7.3+esm1 | || | liblxc-dev – 1:5.0.3-2ubuntu7.3+esm1 | ||| | liblxc1t64 – 1:5.0.3-2ubuntu7.3+esm1 | ||| | libpam-cgfs – 1:5.0.3-2ubuntu7.3+esm1 | ||| | lxc – 1:5.0.3-2ubuntu7.3+esm1 | ||| | lxc-dev – 1:5.0.3-2ubuntu7.3+esm1 | ||| | lxc-tests – 1:5.0.3-2ubuntu7.3+esm1 | ||| | lxc-utils – 1:5.0.3-2ubuntu7.3+esm1 | ||| | lxc1 – 1:5.0.3-2ubuntu7.3+esm1 | ||| | 22.04 LTS jammy | liblxc-common – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | || | liblxc-dev – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | liblxc1 – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | libpam-cgfs – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | lxc – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | lxc-dev – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | lxc-utils – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | lxc1 – 1:5.0.0~git2209-g5a7b9ce67-0ubuntu1.1+esm1 | ||| | 20.04 LTS focal | liblxc-common – 1:4.0.12-0ubuntu1~20.04.1+esm1 | || | liblxc-dev – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | liblxc1 – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | libpam-cgfs – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | lxc – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | lxc-dev – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | lxc-utils – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | lxc1 – 1:4.0.12-0ubuntu1~20.04.1+esm1 | ||| | 18.04 LTS bionic | liblxc-common – 3.0.3-0ubuntu1~18.04.3+esm1 | || | liblxc-dev – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | liblxc1 – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | libpam-cgfs – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | lxc – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | lxc-dev – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | lxc-utils – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | lxc1 – 3.0.3-0ubuntu1~18.04.3+esm1 | ||| | 16.04 LTS xenial | liblxc1 – 2.0.11-0ubuntu1~16.04.3+esm1 | || | lua-lxc – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | lxc – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | lxc-common – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | lxc-dev – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | lxc-templates – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | lxc-tests – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | lxc1 – 2.0.11-0ubuntu1~16.04.3+esm1 | ||| | python3-lxc – 2.0.11-0ubuntu1~16.04.3+esm1 | 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.