Mercurial > vim
view runtime/ftplugin/mermaid.vim @ 33865:8cdb69ea3711 v9.0.2143
patch 9.0.2143: [security]: buffer-overflow in ex_substitute
Commit: https://github.com/vim/vim/commit/abfa13ebe92d81aaf66669c428d767847b577453
Author: Christian Brabandt <cb@256bit.org>
Date: Thu Nov 30 11:32:18 2023 +0100
patch 9.0.2143: [security]: buffer-overflow in ex_substitute
Problem: [security]: buffer-overflow in ex_substitute
Solution: clear memory after allocating
When allocating the new_start pointer in ex_substitute() the memory
pointer points to some garbage that the following for loop in
ex_cmds.c:4743 confuses and causes it to accessing the new_start pointer
beyond it's size, leading to a buffer-overlow.
So fix this by using alloc_clear() instead of alloc(), which will
clear the memory by NUL and therefore cause the loop to terminate
correctly.
Reported by @henices, thanks!
closes: #13596
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 10 Dec 2023 15:16:05 +0100 |
| parents | a7801222c9c5 |
| children |
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" Vim filetype plugin " Language: Mermaid " Maintainer: Craig MacEachern <https://github.com/craigmac/vim-mermaid> " Last Change: 2022 Oct 13 if exists("b:did_ftplugin") finish endif let s:keepcpo= &cpo set cpo&vim " Use mermaid live editor's style setlocal expandtab setlocal shiftwidth=2 setlocal softtabstop=-1 setlocal tabstop=4 " TODO: comments, formatlist stuff, based on what? setlocal comments=b:#,fb:- setlocal commentstring=#\ %s setlocal formatoptions+=tcqln formatoptions-=r formatoptions-=o setlocal formatlistpat=^\\s*\\d\\+\\.\\s\\+\\\|^\\s*[-*+]\\s\\+\\\|^\\[^\\ze[^\\]]\\+\\]:\\&^.\\{4\\} if exists('b:undo_ftplugin') let b:undo_ftplugin .= "|setl cms< com< fo< flp< et< ts< sts< sw<" else let b:undo_ftplugin = "setl cms< com< fo< flp< et< ts< sts< sw<" endif if !exists("g:no_plugin_maps") && !exists("g:no_markdown_maps") nnoremap <silent><buffer> [[ :<C-U>call search('\%(^#\{1,5\}\s\+\S\\|^\S.*\n^[=-]\+$\)', "bsW")<CR> nnoremap <silent><buffer> ]] :<C-U>call search('\%(^#\{1,5\}\s\+\S\\|^\S.*\n^[=-]\+$\)', "sW")<CR> xnoremap <silent><buffer> [[ :<C-U>exe "normal! gv"<Bar>call search('\%(^#\{1,5\}\s\+\S\\|^\S.*\n^[=-]\+$\)', "bsW")<CR> xnoremap <silent><buffer> ]] :<C-U>exe "normal! gv"<Bar>call search('\%(^#\{1,5\}\s\+\S\\|^\S.*\n^[=-]\+$\)', "sW")<CR> let b:undo_ftplugin .= '|sil! nunmap <buffer> [[|sil! nunmap <buffer> ]]|sil! xunmap <buffer> [[|sil! xunmap <buffer> ]]' endif " if has("folding") && get(g:, "markdown_folding", 0) " setlocal foldexpr=MarkdownFold() " setlocal foldmethod=expr " setlocal foldtext=MarkdownFoldText() " let b:undo_ftplugin .= "|setl foldexpr< foldmethod< foldtext<" " endif let &cpo = s:keepcpo unlet s:keepcpo " vim:set sw=2: