Out-of-bounds Read in GitHub repository vim/vim prior to 9.0.
https://security.gentoo.org/glsa/202305-16
https://security.gentoo.org/glsa/202208-32
https://huntr.dev/bounties/ca581f80-03ba-472a-b820-78f7fd05fe89
https://github.com/vim/vim/commit/083692d598139228e101b8c521aaef7bcf256e9a