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Ubuntu 25.10 systemd Important DoS Risk USN-8119-1 CVE-2026-29111

ubuntu
Calendar Grey March 24, 2026
Dist Ubuntu Esm H88
Multiple security fixes for systemd on Ubuntu addresses critical threats including DoS risks, ensuring system integrity.
Several security issues were fixed in systemd.

Summary

Several security issues were fixed in systemd.

Software Description:

- systemd: system and service manager

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. (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 denial of service update Ubuntu important systemd

Update Instructions

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

Ubuntu 25.10
  libsystemd0                     257.9-0ubuntu2.3
  libudev1                        257.9-0ubuntu2.3
  systemd                         257.9-0ubuntu2.3
  udev                            257.9-0ubuntu2.3

Ubuntu 24.04 LTS
  libsystemd0                     255.4-1ubuntu8.14
  libudev1                        255.4-1ubuntu8.14
  systemd                         255.4-1ubuntu8.14
  udev                            255.4-1ubuntu8.14

Ubuntu 22.04 LTS
  libsystemd0                     249.11-0ubuntu3.19
  libudev1                        249.11-0ubuntu3.19
  systemd                         249.11-0ubuntu3.19
  udev                            249.11-0ubuntu3.19

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

References

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

CVE-2026-29111

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8119-1

Topics%20covered

Topics Covered

security advisory denial of service update Ubuntu important systemd

Package Information

https://launchpad.net/ubuntu/+source/systemd/257.9-0ubuntu2.3
https://launchpad.net/ubuntu/+source/systemd/255.4-1ubuntu8.14
https://launchpad.net/ubuntu/+source/systemd/249.11-0ubuntu3.19

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