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Prevent crashes if freed objects are passed to SDL API functions

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Instead of using the magic tag in the object, we'll actually keep track of valid objects

Fixes https://github.com/libsdl-org/SDL/issues/9869
Fixes https://github.com/libsdl-org/SDL/issues/9235
This commit is contained in:
Sam Lantinga 2024-06-03 04:09:28 -07:00
parent 57a15933cd
commit b0e93e4e63
28 changed files with 191 additions and 126 deletions
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2
src/events/SDL_keyboard.c
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@ -891,7 +891,7 @@ int SDL_SetKeyboardFocus(SDL_Window *window)
SDL_Keyboard *keyboard = &SDL_keyboard;
if (window) {
if (!video || window->magic != &video->window_magic || window->is_destroying) {
if (!SDL_ObjectValid(window, SDL_OBJECT_TYPE_WINDOW) || window->is_destroying) {
return SDL_SetError("Invalid window");
}
}