X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpeg4videodec.c;h=02035035996be5576a5955edd6f7297742b18b53;hb=8a3d3b624075c56b844cbd0f3d58c6e291c8e18c;hp=82c4f8fc8c3f6ebbb7dd3511e1e946b475414ccb;hpb=4e6c85b3bae08aa2212d93d0f7986512226fb9c7;p=ffmpeg

diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c
index 82c4f8fc8c3..02035035996 100644
--- a/libavcodec/mpeg4videodec.c
+++ b/libavcodec/mpeg4videodec.c
@@ -189,6 +189,10 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
     if (w <= 0 || h <= 0)
         return AVERROR_INVALIDDATA;
 
+    /* the decoder was not properly initialized and we cannot continue */
+    if (sprite_trajectory.table == NULL)
+        return AVERROR_INVALIDDATA;
+
     for (i = 0; i < ctx->num_sprite_warping_points; i++) {
         int length;
         int x = 0, y = 0;