It was discovered that the C++ implementation (which underlies the R, Python and Ruby implementations) of Apache Arrow 0.14.0 to 0.14.1 had a uninitialized memory bug when building arrays with null va
It was discovered that the C++ implementation (which underlies the R, Python and Ruby implementations) of Apache Arrow 0.14.0 to 0.14.1 had a uninitialized memory bug when building arrays with null values in some cases. This can lead to uninitialized memory being unintentionally shared if Arrow Arrays are transmitted over the wire (for instance with Flight) or persisted in the streaming IPC and file formats.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pyarrow | >= 0.14.0, < 0.15.0 | 0.15.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2019-12408
- https://github.com/pypa/advisory-database/tree/main/vulns/pyarrow/PYSEC-2019-195.yaml
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/red-arrow/CVE-2019-12408.yml
- https://lists.apache.org/thread.html/49f067b1c5fb7493d952580f0d2d032819ba351f7a78743c21126269@%3Cdev.arrow.apache.org%3E
- https://lists.apache.org/thread.html/efd8bbf57427d3c303b5316d208a335f8d0c0dbe0dc4c87cfa995073@%3Cannounce.apache.org%3E
- https://github.com/advisories/GHSA-8cw2-jv5c-c825
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-909- Platform
- Python (PyPI)
- Package
pyarrow- Disclosed
- 08.11.2019
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8cw2-jv5c-c825 - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2019-195 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: pyarrow
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 11.2019 02.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 3
- Unrated 1
Disclosures per year
- 2019: 2
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 1
-
It was discovered that the C++ implementation (which underlies the R, Python and Ruby implementations) of Apache Arrow 0.14.0 to 0.14.1 had a uninitialized memory bug when building arrays with null va this entry
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