VULNERABILITY INTELLIGENCE

CVE-2024-11991

CVSS score5.6 MEDIUM
EPSS probability0.24%
CISA KEVNot currently listed
Published2024-12-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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.

Weakness classification

  • 6b35d637-e00f-4228-858c-b20ad6e1d07b: CWE-908

Primary references