@@ -197,7 +197,10 @@ static int config_input(AVFilterLink *inlink)

            inlink->w, inlink->h, s->w, s->h, s->x, s->y,

            s->rgba_color[0], s->rgba_color[1], s->rgba_color[2], s->rgba_color[3]);

-    if (s->w <= 0 || s->h <= 0) {

+    if (s->x <  0 || s->y <  0                      ||

+        s->w <= 0 || s->h <= 0                      ||

+        (unsigned)s->x + (unsigned)inlink->w > s->w ||

+        (unsigned)s->y + (unsigned)inlink->h > s->h) {

         av_log(ctx, AV_LOG_ERROR,

                "Input area %d:%d:%d:%d not within the padded area 0:0:%d:%d or zero-sized\n",

                s->x, s->y, s->x + inlink->w, s->y + inlink->h, s->w, s->h);