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asfdec: Use the ASF stream count when iterating

The AVFormat stream count can be larger due external factors, such as
an id3 tag appended.

Avoid an out of bound read.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
John Stebbins 2017-01-12 13:36:26 -07:00 committed by Luca Barbato
parent 7abdd026df
commit 8e67039c63

View File

@ -1485,7 +1485,7 @@ static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
asf->return_subpayload = 0;
return 0;
}
for (i = 0; i < s->nb_streams; i++) {
for (i = 0; i < asf->nb_streams; i++) {
ASFPacket *asf_pkt = &asf->asf_st[i]->pkt;
if (asf_pkt && !asf_pkt->size_left && asf_pkt->data_size) {
if (asf->asf_st[i]->span > 1 &&