OSV-2020-86 Heap-buffer-overflow in bool arrow::util::RleDecoder::NextCounts<int>

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20735 Crash type: Heap-buffer-overflow WRITE Crash state: bool arrow::util::RleDecoder::NextCounts parquet::DictByteArrayDecoderImpl::DecodeArrowDense parquet::DictByteArrayDecoderImpl::DecodeArrow...

OSV-2020-21 UNKNOWN WRITE in arrow::internal::unpack32

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=20711 Crash type: UNKNOWN WRITE Crash state: arrow::internal::unpack32 int arrow::BitUtil::BitReader::GetBatch parquet::DictByteArrayDecoderImpl::DecodeArrowDense...