The fact that Linux is licensed as GPLv2? From the tarball COPYING file: "the only valid version of the GPL as far as the kernel is concerned is _this_ partic

The fact that Linux is licensed as GPLv2? From the tarball COPYING file: "the only valid version of the GPL as far as the kernel is concerned is _this_ particular version of the license (ie v2, not v2.2 or v3.x or whatever), unless explicitly otherwise stated. -Linus Torvalds" Which is identical to kernel.org: https://www.kernel.org/pub/linux/kernel/COPYING https://www.kernel.org/pub/linux/kernel/COPYING That section was discussed at https://lkml.org/lkml/2006/1/25/273 https://lkml.org/lkml/2006/1/25/273 where 2006-Linus doesn't see GPLv3 ever happening.