mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/wmaprodec: Check if there is a stream
Fixes: null pointer dereference Fixes: signed integer overflow: 512 * 2147483647 cannot be represented in type 'int' Fixes: 17809/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_XMA1_fuzzer-5634409947987968 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -1902,7 +1902,9 @@ static av_cold int xma_decode_init(AVCodecContext *avctx)
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}
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/* encoder supports up to 64 streams / 64*2 channels (would have to alloc arrays) */
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if (avctx->channels > XMA_MAX_CHANNELS || s->num_streams > XMA_MAX_STREAMS) {
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if (avctx->channels > XMA_MAX_CHANNELS || s->num_streams > XMA_MAX_STREAMS ||
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s->num_streams <= 0
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) {
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avpriv_request_sample(avctx, "More than %d channels in %d streams", XMA_MAX_CHANNELS, s->num_streams);
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return AVERROR_PATCHWELCOME;
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}
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