Chef 12.22.1 Released!

Ohai Chefs!

We’re happy to announce the release of Chef v12.22.1!

Release Highlights

Security Updates


Ruby has been updated to 2.3.6 to resolve CVE-2017-17405


Libxml2 has been updated to 2.9.7 to resolve CVE-2017-15412

Ohai 8.26.1

EC2 detection on C5/M5

Ohai now provides EC2 metadata configuration information on the new C5/M5 instance types running on Amazon’s new hypervisor.

LsPci Plugin

The new LsPci plugin provides a node[:pci] hash with information about the PCI bus based on lspci. Only runs on Linux.

Docker Detection

The virtualization plugin has been updated to properly detect when running on Docker CE

Get the Build

As always, you can download binaries directly from or by using the new mixlib-install command line utility available in ChefDK 0.19.6 or greater.

$ mixlib-install download chef -v 12.22.1

Alternatively, you can install Chef using one of the following command options:

# In Shell
$ curl | sudo bash -s -- -P chef -v 12.22.1

# In Windows Powershell
. { iwr -useb } | iex; install -project chef -version 12.22.1