USN-6511-1: OpenZFS vulnerability

Releases

• Ubuntu 23.04
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Packages

• zfs-linux - OpenZFS filesystem for Linux

Details

It was discovered that the OpenZFS sharenfs feature incorrectly handled
IPv6 address data. This could result in IPv6 restrictions not being
applied, contrary to expectations.

Update instructions

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

Ubuntu 23.04

• libuutil3linux - 2.1.9-2ubuntu1.2
• zfsutils-linux - 2.1.9-2ubuntu1.2

Ubuntu 22.04

• libuutil3linux - 2.1.5-1ubuntu6~22.04.2
• zfsutils-linux - 2.1.5-1ubuntu6~22.04.2

Ubuntu 20.04

• libuutil1linux - 0.8.3-1ubuntu12.16
• zfsutils-linux - 0.8.3-1ubuntu12.16

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

References

• CVE-2013-20001