CVE-2019-12410: Apache Arrow

High severity, CVSS 7.5. EPSS: 4.6% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Arrow: from 0.12.0, up to and including 0.14.1

Published 2019-11-08. Last modified 2026-06-17.