OSV-2020-776 Negative-size-param in arrow::ConcatenateBuffers

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=24101 Crash type: Negative-size-param Crash state: arrow::ConcatenateBuffers arrow::ConcatenateImpl::Visit arrow::Status arrow::VisitTypeInline...

OSV-2020-761 Heap-buffer-overflow in arrow::ConcatenateBuffers

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=23848 Crash type: Heap-buffer-overflow READ Crash state: arrow::ConcatenateBuffers arrow::ConcatenateImpl::Visit arrow::Status arrow::VisitTypeInline...