@@ -160,7 +160,7 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)

     unsigned i, nb_planes = 0;

     int pixelstep[MAX_PLANES] = { 0 };

-    if (!desc->name)

+    if (!desc || !desc->name)

         return AVERROR(EINVAL);

     if (desc->flags & ~(AV_PIX_FMT_FLAG_PLANAR | AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_PSEUDOPAL | AV_PIX_FMT_FLAG_ALPHA))

         return AVERROR(ENOSYS);