USN-8119-2: systemd vulnerabilities

Publication date

23 March 2026

Overview

Several security issues were fixed in systemd.


Packages

  • systemd - system and service manager

Details

USN-8119-1 fixed vulnerabilities in systemd. This update provides the
corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04
LTS, and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that systemd incorrectly handled certain cgroup paths. A
local attacker could possibly use this issue to cause systemd to crash,
resulting in a denial of service. This issue only affected Ubuntu 20.04
LTS. (CVE-2026-29111)

It was discovered that the systemd udev component incorrectly handled
certain fields received from the kernel. An attacker with a malicious
device could possibly use this issue to execute arbitrary code as an
administrator (root).

USN-8119-1 fixed vulnerabilities in systemd. This update provides the
corresponding updates for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04
LTS, and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that systemd incorrectly handled certain cgroup paths. A
local attacker could possibly use this issue to cause systemd to crash,
resulting in a denial of service. This issue only affected Ubuntu 20.04
LTS. (CVE-2026-29111)

It was discovered that the systemd udev component incorrectly handled
certain fields received from the kernel. An attacker with a malicious
device could possibly use this issue to execute arbitrary code as an
administrator (root).

Update instructions

After a standard system update you need to reboot your computer 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
20.04 LTS focal libsystemd0 –  245.4-4ubuntu3.24+esm3  
libudev1 –  245.4-4ubuntu3.24+esm3  
systemd –  245.4-4ubuntu3.24+esm3  
udev –  245.4-4ubuntu3.24+esm3  
18.04 LTS bionic libudev1 –  237-3ubuntu10.57+esm3  
udev –  237-3ubuntu10.57+esm3  
16.04 LTS xenial libudev1 –  229-4ubuntu21.31+esm4  
udev –  229-4ubuntu21.31+esm4  
14.04 LTS trusty libudev1 –  204-5ubuntu20.31+esm3  
udev –  204-5ubuntu20.31+esm3  

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