GHSA-g98v-hv3f-hcfr
atty potential unaligned read
Blast Radius
attyReal-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
On windows, atty dereferences a potentially unaligned pointer.
In practice however, the pointer won't be unaligned unless a custom global allocator is used.
In particular, the System allocator on windows uses HeapAlloc, which guarantees a large enough alignment.
atty is Unmaintained
A Pull Request with a fix has been provided over a year ago but the maintainer seems to be unreachable.
Last release of atty was almost 3 years ago.
Possible Alternative(s)
The below list has not been vetted in any way and may or may not contain alternatives;
- std::io::IsTerminal - Stable since Rust 1.70.0
- is-terminal - Standalone crate supporting Rust older than 1.70.0"
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🦀crates.io | atty | all versions | No fix |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for atty. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Remediation status
No patched version of atty has shipped for GHSA-g98v-hv3f-hcfr yet. Where your build allows, override or pin the dependency away from the vulnerable range, and apply any maintainer-recommended mitigation.
Mitigate without a patch
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-g98v-hv3f-hcfr is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-g98v-hv3f-hcfr. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-g98v-hv3f-hcfr in your dependencies?
O3 detects GHSA-g98v-hv3f-hcfr across crates.io dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.