Packages
- systemd - system and service manager
Details
It was discovered that systemd-nspawn incorrectly handled certain optional
configuration files. A local attacker could possibly use this issue to
escape to the host system and execute arbitrary code. (CVE-2026-40226)
It was discovered that systemd-resolved incorrectly validated DNSSEC
records for signed domains. An attacker could possibly use this issue to
manipulate DNS records. This issue only affected Ubuntu 22.04 LTS.
(CVE-2023-7008)
It was discovered that systemd-nspawn incorrectly handled certain optional
configuration files. A local attacker could possibly use this issue to
escape to the host system and execute arbitrary code. (CVE-2026-40226)
It was discovered that systemd-resolved incorrectly validated DNSSEC
records for signed domains. An attacker could possibly use this issue to
manipulate DNS records. This issue only affected Ubuntu 22.04 LTS.
(CVE-2023-7008)
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 | ||
|---|---|---|---|
| 25.10 questing | libsystemd0 – 257.9-0ubuntu2.5 | ||
| libudev1 – 257.9-0ubuntu2.5 | |||
| systemd – 257.9-0ubuntu2.5 | |||
| udev – 257.9-0ubuntu2.5 | |||
| 24.04 LTS noble | libsystemd0 – 255.4-1ubuntu8.16 | ||
| libudev1 – 255.4-1ubuntu8.16 | |||
| systemd – 255.4-1ubuntu8.16 | |||
| udev – 255.4-1ubuntu8.16 | |||
| 22.04 LTS jammy | libnss-resolve – 249.11-0ubuntu3.21 | ||
| libsystemd0 – 249.11-0ubuntu3.21 | |||
| libudev1 – 249.11-0ubuntu3.21 | |||
| systemd – 249.11-0ubuntu3.21 | |||
| udev – 249.11-0ubuntu3.21 | |||
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.