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avformat: Free the internal codec context at the end 

Avoid a use after free in avformat_find_stream_info.

CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2017-04-12 01:46:30 +02:00
parent 19c5fa9eea
commit 9e4a5eb51b
1 changed files with 1 additions and 5 deletions
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6
libavformat/utils.c
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@ -2466,11 +2466,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
count++;
}
// close codecs which were opened in try_decode_frame()
for (i = 0; i < ic->nb_streams; i++) {
st = ic->streams[i];
avcodec_close(st->internal->avctx);
}
for (i = 0; i < ic->nb_streams; i++) {
st = ic->streams[i];
avctx = st->internal->avctx;
@ -2570,6 +2565,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
find_stream_info_err:
for (i = 0; i < ic->nb_streams; i++) {
avcodec_close(ic->streams[i]->internal->avctx);
av_freep(&ic->streams[i]->info);
av_bsf_free(&ic->streams[i]->internal->extract_extradata.bsf);
av_packet_free(&ic->streams[i]->internal->extract_extradata.pkt);