CVE-2024-4435

CVE-2024-4435 is a memory leak vulnerability affecting Dfinity's stable_structures library, specifically versions 0.6.0 to 0.6.3, when BTreeMap is used to store unbounded types. The flaw occurs during node deallocation, where only the first memory chunk is released, leaving others incorrectly allocated. This can lead to excessive memory consumption or denial of service (DoS) due to out-of-memory conditions, carrying a CVSS score of 7.5 (High) with a network attack vector and low attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion. Users are advised to upgrade to version 0.6.4 if storing unbounded types in BTreeMap.