These parts are licensed under the Creative Commons CC-BY-SA 4.0 License, with the following exception:
To the extent that the creation of electronic designs that use 'Licensed Material' can be considered to be 'Adapted Material', then the copyright holder waives article 3 of the license with respect to these designs and any generated files which use data provided as part of the 'Licensed Material'.
This is the same license as the official Kicad libraries.
Warranty
These libraries are provided in the hope that they will be useful, but are provided without warranty of any kind, express or implied.