diff options
Diffstat (limited to 'libavformat/flacenc.c')
| -rw-r--r-- | libavformat/flacenc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/libavformat/flacenc.c b/libavformat/flacenc.c index 93cc79b..abbed38 100644 --- a/libavformat/flacenc.c +++ b/libavformat/flacenc.c @@ -93,7 +93,7 @@ static int flac_write_picture(struct AVFormatContext *s, AVPacket *pkt) AVDictionaryEntry *e; const char *mimetype = NULL, *desc = ""; const AVStream *st = s->streams[pkt->stream_index]; - int i, mimelen, desclen, type = 0; + int i, mimelen, desclen, type = 0, blocklen; if (!pkt->data) return 0; @@ -140,8 +140,14 @@ static int flac_write_picture(struct AVFormatContext *s, AVPacket *pkt) desc = e->value; desclen = strlen(desc); + blocklen = 4 + 4 + mimelen + 4 + desclen + 4 + 4 + 4 + 4 + 4 + pkt->size; + if (blocklen >= 1<<24) { + av_log(s, AV_LOG_ERROR, "Picture block too big %d >= %d\n", blocklen, 1<<24); + return AVERROR(EINVAL); + } + avio_w8(pb, 0x06); - avio_wb24(pb, 4 + 4 + mimelen + 4 + desclen + 4 + 4 + 4 + 4 + 4 + pkt->size); + avio_wb24(pb, blocklen); avio_wb32(pb, type); |
