[FFmpeg-devel] [PATCH 2/2] compat/w32dlfcn: remove support for pre-KB2533623 Win7 systems

[Ramiro Polla]

On Tue, Jul 30, 2024 at 5:17 PM Rémi Denis-Courmont <remi at remlab.net> wrote:
> Le tiistaina 30. heinäkuuta 2024, 17.09.15 EEST Ramiro Polla a écrit :
> > The KB2533623 security update has been released 13 years ago and
> > Windows 7 has reached end of extended support 4 years ago.
>
> No objections, but what will this imply in terms of which Windows versions
> FFmpeg supports?

Calls to dlopen() with non-absolute and non-relative paths (i.e.: just
the module name) on systems with Windows 7 which do not have the
security update KB2533623 (and systems older than Windows 7) will not
restrict the search path to the executable's directory and the system
directory. They will instead use the default search order.

This will affect avisynth, mfenc, amfenc, vsrc_ddagrab, and
hwcontext_{d3d11va,d3d12va,dxva2,vaapi,vulkan}.

So support remains the same (all will still run), but for the older
systems security will be a bit more relaxed.