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avformat/wavdec: Check chunk_size
Fixes integer overflow and out of array access Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -841,6 +841,8 @@ static int w64_read_header(AVFormatContext *s)
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chunk_key[4] = 0;
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avio_read(pb, chunk_key, 4);
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chunk_size = avio_rl32(pb);
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if (chunk_size == UINT32_MAX)
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return AVERROR_INVALIDDATA;
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value = av_mallocz(chunk_size + 1);
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if (!value)
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