- CVE-2021-3903: do not set VALID_BOTLINE in update_topline() when screen is invalid - CVE-2022-1616: tighten append_command() loop bound + pre-write length check to avoid buffer overflow with composing chars - CVE-2022-2042: initialize attr in spell_move_to() and capture empty_line before ml_get_buf() invalidates line - CVE-2022-2581: in cstrchr() reject illegal byte that would otherwise fold-match a multi-byte char - CVE-2022-3324: clamp next_curwin_size and w_width to non-negative in win_equal_rec()/win_new_width() - CVE-2022-0554: skip quickfix buffers when picking a replacement after deleting the current buffer