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avformat/isom: free extradata on failure to read it

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Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f607d80f661_6965_mov00003.mqv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-12-23 18:09:58 +01:00
parent 2a5fb0b13e
commit ac480cb58d
1 changed files with 4 additions and 1 deletions
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5
libavformat/isom.c
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@ -460,8 +460,11 @@ int ff_mp4_read_dec_config_descr(AVFormatContext *fc, AVStream *st, AVIOContext
av_free(st->codec->extradata);
if (ff_alloc_extradata(st->codec, len))
return AVERROR(ENOMEM);
if ((ret = avio_read(pb, st->codec->extradata, len)) != len)
if ((ret = avio_read(pb, st->codec->extradata, len)) != len) {
av_freep(&st->codec->extradata);
st->codec->extradata_size = 0;
return ret < 0 ? ret : AVERROR_INVALIDDATA;
}
if (st->codec->codec_id == AV_CODEC_ID_AAC) {
MPEG4AudioConfig cfg = {0};
avpriv_mpeg4audio_get_config(&cfg, st->codec->extradata,