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 compiler file
" Compiler:	GJS (Gnome JavaScript Bindings)
" Maintainer:	Doug Kearns <dougkearns@gmail.com>
" Last Change:	2019 Jul 10

if exists("current_compiler")
  finish
endif
let current_compiler = "gjs"

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

let s:cpo_save = &cpo
set cpo&vim

CompilerSet makeprg=gjs
CompilerSet errorformat=%.%#JS\ %tRROR:\ %m\ @\ %f:%c,
		       \%E%.%#JS\ ERROR:\ %m,
		       \%Z@%f:%l:%c,
		       \%-G%.%#

let &cpo = s:cpo_save
unlet s:cpo_save