Richard Fontana ( richard fontana ), one of the authors of the GPLV3 license, working as open licenses and patents in Red Red Hat, announced about the Plane of Valuation to the rules prohibiting the inclusion in the repository of software supplied under the Creative Commons CC0 license. The CC0 license implies the author’s refusal of his rights and distribution as a public property, which allows you to distribute, change and copy software without any conditions for any purpose.
The reason for the ban CC0 is called uncertainty in relation to patents on the software. The text of the CC0 license has a paragraph that clearly indicates that the license does not affect patent rights and rights to trademarks that can be used in the application. The possibility of influence through patents is considered as a potential threat, so licenses that clearly do not provide the possibility of using patents or do not refuse patents are considered as not related to the category of open and free (FOSS).
The possibility of placing the contents in the CC0 license in the CC0 license will be left. For the packages of code, which are supplied under the CC0 license already placed in the Fedora repositories, they may be excluded and allowed to continue supply. The inclusion of new packages with the code supplied under the CC0 license will be prohibited.