Mercurial > vim
view runtime/ftplugin.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 | 4027cefc2aab |
children |
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vim9script noclear # Vim support file to switch on loading plugins for file types # # Maintainer: The Vim Project <https://github.com/vim/vim> # Last change: 2023 Aug 10 # Former Maintainer: Bram Moolenaar <Bram@vim.org> if exists("g:did_load_ftplugin") finish endif g:did_load_ftplugin = 1 augroup filetypeplugin au FileType * call LoadFTPlugin() augroup END if exists('*LoadFTPlugin') # No need to define the function again. finish endif def LoadFTPlugin() if exists("b:undo_ftplugin") # We assume b:undo_ftplugin is using legacy script syntax legacy exe b:undo_ftplugin unlet! b:undo_ftplugin b:did_ftplugin endif var s = expand("<amatch>") if s != "" if &cpo =~# "S" && exists("b:did_ftplugin") # In compatible mode options are reset to the global values, need to # set the local values also when a plugin was already used. unlet b:did_ftplugin endif # When there is a dot it is used to separate filetype names. Thus for # "aaa.bbb" load "aaa" and then "bbb". for name in split(s, '\.') exe 'runtime! ftplugin/' .. name .. '.vim ftplugin/' .. name .. '_*.vim ftplugin/' .. name .. '/*.vim' endfor endif enddef