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 syntax file
" Language:	RCS log output
" Maintainer:	Joe Karthauser <joe@freebsd.org>
" Last Change:	2001 May 09

" quit when a syntax file was already loaded
if exists("b:current_syntax")
  finish
endif

syn match rcslogRevision	"^revision.*$"
syn match rcslogFile		"^RCS file:.*"
syn match rcslogDate		"^date: .*$"

" Define the default highlighting.
" Only when an item doesn't have highlighting yet

hi def link rcslogFile		Type
hi def link rcslogRevision	Constant
hi def link rcslogDate		Identifier


let b:current_syntax = "rcslog"

" vim: ts=8