CVE-2026-73072: fix heap buffer overflow in set_sofo(); reset sl_sal_first[] before the SN_SOFO
counting loop, since a preceding SN_SAL section may have set its entries to -1 via set_sal_first(),
making the loop under-count colliding multi-byte characters and allocate an undersized list
(src/spellfile.c, upstream patch 9.2.0846)
CVE-2026-73076: fix arbitrary code execution via a crafted .VimballRecord file; refuse to extract
a member named .VimballRecord, record deletions with string() instead of raw quote interpolation,
and execute only whitelisted call delete() entries in vimball#RmVimball()
(runtime/autoload/vimball.vim, upstream patch 9.2.0847)
CVE-2026-73078: fix Ex command injection in the netrw bookmark and history menus; add the Ex
separator | to g:netrw_menu_escape, escape the :e targets with fnameescape(), and quote the
netrw#MakeTgt() arguments with string() (runtime/autoload/netrw.vim, upstream patch 9.2.0840)