For example in version 6.0.0: /lib/modules/4.19.19-1-lts/kernel/drivers/net/wireless/broadcom/b43/b43.ko.xz is a binary driver for which we decided in bug 666588 that we cannot distribute it. Also the ebuild will need RESTRICT="mirror bindist". Also LICENSE="GPL-2" is incomplete (as is the upstream claim on http://www.system-rescue-cd.org/ that "SystemRescueCd is licensed under the GPL-2 license."). AFAICS, all versions currently in the tree are affected.
Other examples of undistributable packages, in systemrescuecd-x86-5.3.2: dev-libs/openssl-1.0.2p[-bindist] (bindist restricted, elliptic curves) media-libs/freetype-2.9.1-r3[-bindist] (bindist restricted, ClearType patents) www-client/firefox-bin-63.0.1-r1 (mirror restricted, official branding)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=74d7bde6a17776a8159bdfb342290538c5e53f27 commit 74d7bde6a17776a8159bdfb342290538c5e53f27 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2019-04-01 12:22:58 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2019-04-01 12:23:37 +0000 app-admin/systemrescuecd-x86: Restrict mirror & bindist Closes: https://bugs.gentoo.org/682206 Signed-off-by: Michał Górny <mgorny@gentoo.org> app-admin/systemrescuecd-x86/systemrescuecd-x86-5.1.2.ebuild | 2 ++ app-admin/systemrescuecd-x86/systemrescuecd-x86-5.2.1.ebuild | 2 ++ app-admin/systemrescuecd-x86/systemrescuecd-x86-5.2.2.ebuild | 2 ++ app-admin/systemrescuecd-x86/systemrescuecd-x86-5.3.1.ebuild | 2 ++ app-admin/systemrescuecd-x86/systemrescuecd-x86-5.3.2.ebuild | 2 ++ app-admin/systemrescuecd-x86/systemrescuecd-x86-6.0.0.ebuild | 2 ++ 6 files changed, 12 insertions(+)