Note that for quite a while Conservancy has (and more recently[1] many other copyright holders have) publicly documented that they extend GPLv3's cure provision

Note that for quite a while Conservancy has (and more recently[1] many other copyright holders have) publicly documented that they extend GPLv3's cure provision to their otherwise-GPLv2-licensed code. There are kernel copyright holders who have not consented to this and when you violate the GPL your license to the parts of the code that they own is terminated per the vanilla GPLv2. But the copyrights which Conservancy represents have the cure provision. [1]: discussion at the time: https://news.ycombinator.com/item?id=16628301 https://news.ycombinator.com/item?id=16628301 (2018)