Incorrect Calculation of Buffer Size in GitHub repository vim/vim prior to 9.0.1378.
https://lists.debian.org/debian-lts-announce/2023/06/msg00015.html
https://huntr.dev/bounties/7e93fc17-92eb-4ae7-b01a-93bb460b643e
https://github.com/vim/vim/commit/c99cbf8f289bdda5d4a77d7ec415850a520330ba