Mercurial > vim
view src/testdir/test_matchadd_conceal_utf8.vim @ 33863:3b8089d550eb v9.0.2141
patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk
Commit: https://github.com/vim/vim/commit/0fb375aae608d7306b4baf9c1f906961f32e2abf
Author: Christian Brabandt <cb@256bit.org>
Date: Wed Nov 29 10:23:39 2023 +0100
patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk
Problem: [security]: buffer-overflow in suggest_trie_walk
Solution: Check n before using it as index into byts array
Basically, n as an index into the byts array, can point to beyond the byts
array. So let's double check, that n is within the expected range after
incrementing it from sp->ts_curi and bail out if it would be invalid.
Reported by @henices, thanks!
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 10 Dec 2023 15:16:03 +0100 |
| parents | 08940efa6b4e |
| children |
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" Test for matchadd() and conceal feature using utf-8. source check.vim CheckFeature conceal if !has('gui_running') && has('unix') set term=ansi endif func s:screenline(lnum) abort let line = [] for c in range(1, winwidth(0)) call add(line, nr2char(a:lnum->screenchar(c))) endfor return s:trim(join(line, '')) endfunc func s:trim(str) abort return matchstr(a:str,'^\s*\zs.\{-}\ze\s*$') endfunc func Test_match_using_multibyte_conceal_char() new setlocal concealcursor=n conceallevel=1 1put='# This is a Test' " 1234567890123456 let expect = '#ˑThisˑisˑaˑTest' call cursor(1, 1) call matchadd('Conceal', '\%2l ', 20, -1, {'conceal': "\u02d1"}) redraw! let lnum = 2 call assert_equal(expect, s:screenline(lnum)) call assert_notequal(screenattr(lnum, 1), screenattr(lnum, 2)) call assert_equal(screenattr(lnum, 2), screenattr(lnum, 7)) call assert_equal(screenattr(lnum, 2), screenattr(lnum, 10)) call assert_equal(screenattr(lnum, 2), screenattr(lnum, 12)) call assert_equal(screenattr(lnum, 1), screenattr(lnum, 16)) quit! endfunc " vim: shiftwidth=2 sts=2 expandtab