| Package | Affected versions | Patched versions |
|---|---|---|
| pyarrow | ≥ 0.12.0, < 0.15.0≥ 0.12.0, < 0.15.1 | 0.15.00.15.1 |
| red-arrow | ≥ 0.12.0, < 0.15.1 | 0.15.1 |
| arrow | ≥ 0.12.0, ≤ 0.14.1 |
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.
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