diff --git a/libavformat/id3v2.c b/libavformat/id3v2.c index 96f3e1c61a..4fecffe6ba 100644 --- a/libavformat/id3v2.c +++ b/libavformat/id3v2.c @@ -237,11 +237,11 @@ static void ff_id3v2_parse(AVFormatContext *s, int len, uint8_t version, uint8_t tag[3] = 0; tlen = avio_rb24(s->pb); } - len -= taghdrlen + tlen; - - if (len < 0) + if (tlen < 0 || tlen > len - taghdrlen) { + av_log(s, AV_LOG_WARNING, "Invalid size in frame %s, skipping the rest of tag.\n", tag); break; - + } + len -= taghdrlen + tlen; next = avio_tell(s->pb) + tlen; if (tflags & ID3v2_FLAG_DATALEN) {