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Ubuntu 20.04 LTS Advisory USN-8119-2 Systemd Critical DoS and Code Exec

ubuntu
Calendar Grey March 24, 2026
Dist Ubuntu Esm H88
Multiple security issues addressed in systemd for Ubuntu affecting several LTS versions with critical risks.
Several security issues were fixed in systemd.

Summary

Several security issues were fixed in systemd.

Software Description:

- 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).

Topics%20covered

Topics Covered

security advisory critical systemd ubuntulinux denialofservice arbitrarycode

Update Instructions

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

Ubuntu 20.04 LTS
  libsystemd0                     245.4-4ubuntu3.24+esm3
                                  Available with Ubuntu Pro
  libudev1                        245.4-4ubuntu3.24+esm3
                                  Available with Ubuntu Pro
  systemd                         245.4-4ubuntu3.24+esm3
                                  Available with Ubuntu Pro
  udev                            245.4-4ubuntu3.24+esm3
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libudev1                        237-3ubuntu10.57+esm3
                                  Available with Ubuntu Pro
  udev                            237-3ubuntu10.57+esm3
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libudev1                        229-4ubuntu21.31+esm4
                                  Available with Ubuntu Pro
  udev                            229-4ubuntu21.31+esm4
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  libudev1                        204-5ubuntu20.31+esm3
                                  Available with Ubuntu Pro
  udev                            204-5ubuntu20.31+esm3
                                  Available with Ubuntu Pro

After a standard system update you need to reboot your computer to make all
the necessary changes.

References

https://ubuntu.com/security/notices/USN-8119-2

https://ubuntu.com/security/notices/USN-8119-1

CVE-2026-29111

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8119-2

Topics%20covered

Topics Covered

security advisory critical systemd ubuntulinux denialofservice arbitrarycode

Package Information

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