fileio.c in Vim prior to 8.0.1263 sets the group ownership of a .swp file to the editor's primary group (which may be different from the group ownership of the original file), which allows local users to obtain sensitive information by leveraging an applicable group membership, as demonstrated by /etc/shadow owned by root:shadow mode 0640, but /etc/.shadow.swp owned by root:users mode 0640, a different vulnerability than CVE-2017-1000382.
https://usn.ubuntu.com/4582-1/
https://lists.debian.org/debian-lts-announce/2022/01/msg00003.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00003.html
https://groups.google.com/d/msg/vim_dev/sRT9BtjLWMk/BRtSXNU4BwAJ
https://github.com/vim/vim/commit/5a73e0ca54c77e067c3b12ea6f35e3e8681e8cf8
http://security.cucumberlinux.com/security/details.php?id=166