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>

" Vim filetype plugin file
" Language:	Kimwitu++
" Maintainer:	Michael Piefel <entwurf@piefel.de>
" Last Change:	10 March 2012

" Behaves almost like C++
runtime! ftplugin/cpp.vim ftplugin/cpp_*.vim ftplugin/cpp/*.vim

let s:cpo_save = &cpo
set cpo&vim

" Limit the browser to related files
if has("gui_win32") && !exists("b:browsefilter")
    let b:browsefilter = "Kimwitu/Kimwitu++ Files (*.k)\t*.k\n" .
		\ "Lex/Flex Files (*.l)\t*.l\n" .
		\ "Yacc/Bison Files (*.y)\t*.y\n" .
		\ "All Files (*.*)\t*.*\n"
endif

" Set the errorformat for the Kimwitu++ compiler
set efm+=kc%.%#:\ error\ at\ %f:%l:\ %m

if exists("b:undo_ftplugin")
    let b:undo_ftplugin = b:undo_ftplugin . " | setlocal efm<"
	\ . "| unlet! b:browsefiler"
else
    let b:undo_ftplugin = "setlocal efm<"
	\ . "| unlet! b:browsefiler"
endif

let &cpo = s:cpo_save
unlet s:cpo_save