patch 9.0.2158: [security]: use-after-free in check_argument_type Commit: https://github.com/vim/vim/commit/0f28791b215bd4c22ed580839409c2f7d39d8140 Author: Christian Brabandt <cb@256bit.org> Date: Mon Dec 11 17:53:25 2023 +0100 patch 9.0.2158: [security]: use-after-free in check_argument_type Problem: [security]: use-after-free in check_argument_type Solution: Reset function type pointer when freeing the function type list function pointer fp->uf_func_type may point to the same memory, that was allocated for fp->uf_type_list. However, when cleaning up a function definition (e.g. because it was invalid), fp->uf_type_list will be freed, but fp->uf_func_type may still point to the same (now) invalid memory address. So when freeing the fp->uf_type_list, check if fp->func_type points to any of those types and if it does, reset the fp->uf_func_type pointer to the t_func_any (default) type pointer closes: #13652 Signed-off-by: Christian Brabandt <cb@256bit.org>

:: command to build huge Vim with OLE, Lua, Perl, Python, Racket, Ruby and Tcl
SET VCDIR="C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\bin\"
SET TOOLDIR=E:\
%VCDIR%nmake -f Make_mvc.mak GUI=yes OLE=yes LUA=%TOOLDIR%lua53 DYNAMIC_LUA=yes LUA_VER=53 PERL=%TOOLDIR%perl524 DYNAMIC_PERL=yes PERL_VER=524 PYTHON=%TOOLDIR%python27 DYNAMIC_PYTHON=yes PYTHON_VER=27 PYTHON3=%TOOLDIR%python36 DYNAMIC_PYTHON3=yes PYTHON3_VER=36 MZSCHEME=%TOOLDIR%Racket DYNAMIC_MZSCHEME=yes MZSCHEME_VER=3m_a36fs8 RUBY=%TOOLDIR%ruby24 DYNAMIC_RUBY=yes RUBY_VER=24 RUBY_API_VER_LONG=2.4.0 RUBY_MSVCRT_NAME=msvcrt TCL=%TOOLDIR%ActiveTcl TCL_VER=86 TCL_VER_LONG=8.6 DYNAMIC_TCL=yes TCL_DLL=tcl86t.dll %1 IME=yes CSCOPE=yes DIRECTX=yes