From: Markus Koschany Date: Wed, 2 Nov 2022 23:13:09 +0100 Subject: CVE-2022-2304 Origin: https://github.com/vim/vim/commit/54e5fed6d27b747ff152cdb6edfb72ff60e70939 --- src/spell.c | 5 +++-- src/testdir/test_spell.vim | 14 ++++++++++++++ 2 files changed, 17 insertions(+), 2 deletions(-) --- a/src/spell.c +++ b/src/spell.c @@ -8505,9 +8505,10 @@ spell_dump_compl( n = arridx[depth] + curi[depth]; ++curi[depth]; c = byts[n]; - if (c == 0) + if (c == 0 || depth >= MAXWLEN - 1) { - /* End of word, deal with the word. + /* End of word or reached maximum length, deal with the + * word. * Don't use keep-case words in the fold-case tree, * they will appear in the keep-case tree. * Only use the word when the region matches. */ --- a/src/testdir/test_spell.vim +++ b/src/testdir/test_spell.vim @@ -260,6 +260,19 @@ func Test_zz_compound() endfunc +func Test_spell_dump_word_length() + " this was running over MAXWLEN + new + noremap 0 0a0zW0000000 + sil! norm 0z=0 + sil norm 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 + sil! norm 0z=0 + + bwipe! + nunmap 0 +endfunc + + "Test affix flags with two characters func Test_zz_affix() call LoadAffAndDic(g:test_data_aff5, g:test_data_dic5) @@ -922,3 +935,4 @@ let g:test_data_aff_sal = [ \"SAL ZZ- _", \"SAL Z S", \ ] +