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avcodec/binkaudio: Check sample rate 

Fixes: signed integer overflow: 1092624416 * 2 cannot be represented in type 'int'
Fixes: 18045/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINKAUDIO_RDFT_fuzzer-5718519492116480

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Reviewed-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-10-11 00:40:07 +02:00
parent b288a7eb3d
commit 2fca09bce4
1 changed files with 2 additions and 0 deletions
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2
libavcodec/binkaudio.c
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@ -95,6 +95,8 @@ static av_cold int decode_init(AVCodecContext *avctx)
if (avctx->codec->id == AV_CODEC_ID_BINKAUDIO_RDFT) {
// audio is already interleaved for the RDFT format variant
avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
if (sample_rate > INT_MAX / avctx->channels)
return AVERROR_INVALIDDATA;
sample_rate *= avctx->channels;
s->channels = 1;
if (!s->version_b)