description: While investigating UBSAN errors in https://github.com/apache/arrow/pull/5365 it was discovered Apache Arrow versions 0.12.0 to 0.14.1, left memory Array data uninitialized when reading RLE null data from parquet. This affected the C++, Python, Ruby and R implementations. The uninitialized memory could potentially be shared if are transmitted over the wire (for instance with Flight) or persisted in the streaming IPC and file formats.
problem types: Information Disclosure
affected:
{
product: Apache Arrow
vendor: Apache Software Foundation
versions:
status: affected, version: Apache Arrow 0.12.0 to 0.14.1
}