diff --git a/libavformat/wtvdec.c b/libavformat/wtvdec.c
index 1a6c4c3348..730c7fca78 100644
--- a/libavformat/wtvdec.c
+++ b/libavformat/wtvdec.c
@@ -846,7 +846,8 @@ static int parse_chunks(AVFormatContext *s, int mode, int64_t seekts, int *len_p
                 }
 
                 buf_size = FFMIN(len - consumed, sizeof(buf));
-                avio_read(pb, buf, buf_size);
+                if (avio_read(pb, buf, buf_size) != buf_size)
+                    return AVERROR_INVALIDDATA;
                 consumed += buf_size;
                 ff_parse_mpeg2_descriptor(s, st, 0, &pbuf, buf + buf_size, NULL, 0, 0, NULL);
             }