USN-3891-1: systemd vulnerability

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• systemd - system and service manager

Details

It was discovered that systemd incorrectly handled certain D-Bus messages.
A local unprivileged attacker could exploit this in order to crash the
init process, resulting in a system denial-of-service (kernel panic).

Update instructions

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

Ubuntu 18.10

• libsystemd0 - 239-7ubuntu10.8
• systemd - 239-7ubuntu10.8

Ubuntu 18.04

• libsystemd0 - 237-3ubuntu10.13
• systemd - 237-3ubuntu10.13

Ubuntu 16.04

• libsystemd0 - 229-4ubuntu21.16
• systemd - 229-4ubuntu21.16

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

References

• CVE-2019-6454