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avformat/flvdec: initialize context before reading from it

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Fixes use of uninitialized memory
Fixes: msan_uninit-mem_7f9b8387069e_5377_flv_with_pcm_s16be_audio_track.flv
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-01-10 20:58:19 +01:00
parent e2bb185e62
commit 396ddcf22d
1 changed files with 1 additions and 1 deletions
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2
libavformat/flvdec.c
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@ -916,7 +916,7 @@ retry_duration:
flv->last_channels = flv->last_channels =
channels = st->codec->channels; channels = st->codec->channels;
} else { } else {
AVCodecContext ctx; AVCodecContext ctx = {0};
ctx.sample_rate = sample_rate; ctx.sample_rate = sample_rate;
flv_set_audio_codec(s, st, &ctx, flags & FLV_AUDIO_CODECID_MASK); flv_set_audio_codec(s, st, &ctx, flags & FLV_AUDIO_CODECID_MASK);
sample_rate = ctx.sample_rate; sample_rate = ctx.sample_rate;