Arrow2 allows double free in `safe` codeGHSA-5j8w-r7g8-5472
GHSA-5j8w-r7g8-5472 is a security vulnerability in arrow2. A fix is available for arrow2 — see the affected versions and patch details below.
Real-World Exposure
arrow2🦀arrow2🦀arrow2Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects crates.io packages — download data is not available via public APIs for these ecosystems.
Description
The struct Ffi_ArrowArray implements #derive(Clone) that is inconsistent with
its custom implementation of Drop, resulting in a double free when cloned.
Cloning this struct in safe results in a segmentation fault, which is unsound.
This derive was removed from this struct. All users are advised to either:
- bump the patch version of this crate (for versions
v0.7,v0.8,v0.9), or - migrate to a more recent version of the crate (when using
<0.7).
Doing so elimitates this vulnerability (code no longer compiles).
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | arrow2 | all versions | 0.7.1cargo update -p arrow2 --precise 0.7.1 |
| 🦀crates.io | arrow2 | ≥ 0.8.0&&< 0.8.2 | 0.8.2cargo update -p arrow2 --precise 0.8.2 |
| 🦀crates.io | arrow2 | ≥ 0.9.0&&< 0.9.2 | 0.9.2cargo update -p arrow2 --precise 0.9.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for arrow2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update arrow2 to 0.7.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-5j8w-r7g8-5472 is resolved across your whole dependency graph.
Workarounds
Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable.
Frequently Asked Questions
Is GHSA-5j8w-r7g8-5472 in your dependencies?
Find it across crates.io, including transitive dependencies.