--- a/libavcodec/utvideodec.c	2017-12-11 05:35:09.000000000 +0800
+++ b/libavcodec/utvideodec.c	2018-02-06 15:54:54.872000000 +0800
@@ -561,7 +561,7 @@ static int decode_frame(AVCodecContext *
             for (j = 0; j < c->slices; j++) {
                 slice_end   = bytestream2_get_le32u(&gb);
                 if (slice_end < 0 || slice_end < slice_start ||
-                    bytestream2_get_bytes_left(&gb) < slice_end) {
+                    bytestream2_get_bytes_left(&gb) < slice_end + 1024LL) {
                     av_log(avctx, AV_LOG_ERROR, "Incorrect slice size\n");
                     return AVERROR_INVALIDDATA;
                 }