Description
Motoko's incremental garbage collector is impacted by an uninitialized memory access bug, caused by incorrect use of write barriers in a few locations. This vulnerability could potentially allow unauthorized read or write access to a Canister's memory. However, exploiting this bug requires the Canister to enable the incremental garbage collector or enhanced orthogonal persistence, which are non-default features in Motoko.
Metrics
CVSS 3.1 6.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Internet Computer | Motoko | >= 0.9.0, <= 0.13.3 |
References
- https://github.com/dfinity/motoko/pull/4677Issue Tracking, Patch
- https://github.com/dfinity/motoko/security/advisories/GHSA-9rhg-3qf8-hrv3Vendor Advisory
Timeline
- Published
- Dec 9, 2024
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed