Mercurial > vim
view runtime/syntax/fpcmake.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 | e3ec2ec8841a |
| children |
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" Vim syntax file " Language: Free Pascal Makefile Definition Files " Maintainer: Doug Kearns <dougkearns@gmail.com> " Last Change: 2021 Apr 23 if exists("b:current_syntax") finish endif runtime! syntax/make.vim " NOTE: using start-of-line anchored syn-match groups is simpler than other " alternatives when interacting with the sourced make.vim syntax groups " Sections syn region fpcmakeSection matchgroup=fpcmakeSectionDelimiter start="^\s*\[" end="]" contains=fpcmakeSectionName syn keyword fpcmakeSectionName contained clean compiler default dist install syn keyword fpcmakeSectionName contained lib package prerules require rules syn keyword fpcmakeSectionName contained shared target " [clean] syn match fpcmakeRule "^\s*\(units\|files\)\>" " [compiler] syn match fpcmakeRule "^\s*\(options\|version\|unitdir\|librarydir\|objectdir\)\>" syn match fpcmakeRule "^\s*\(targetdir\|sourcedir\|unittargetdir\|includedir\)\>" " [default] syn match fpcmakeRule "^\s*\(cpu\|dir\|fpcdir\|rule\|target\)\>" " [dist] syn match fpcmakeRule "^\s*\(destdir\|zipname\|ziptarget\)\>" " [install] syn match fpcmakeRule "^\s*\(basedir\|datadir\|fpcpackage\|files\|prefix\)\>" syn match fpcmakeRule "^\s*\(units\)\>" " [package] syn match fpcmakeRule "^\s*\(name\|version\|main\)\>" " [requires] syn match fpcmakeRule "^\s*\(fpcmake\|packages\|libc\|nortl\|unitdir\)\>" syn match fpcmakeRule "^\s*\(packagedir\|tools\)\>" " [shared] syn match fpcmakeRule "^\s*\(build\|libname\|libversion\|libunits\)\>" " [target] syn match fpcmakeRule "^\s*\(dirs\|exampledirs\|examples\|loaders\|programs\)\>" syn match fpcmakeRule "^\s*\(rsts\|units\)\>" " Comments syn keyword fpcmakeTodo TODO FIXME XXX contained syn match fpcmakeComment "#.*" contains=fpcmakeTodo,@Spell " Default highlighting hi def link fpcmakeSectionDelimiter Delimiter hi def link fpcmakeSectionName Type hi def link fpcmakeComment Comment hi def link fpcmakeTodo Todo hi def link fpcmakeRule Identifier let b:current_syntax = "fpcmake" " vim: nowrap sw=2 sts=2 ts=8 noet: