advisory-db/crates/hashconsing/RUSTSEC-2020-0107.md

[advisory]
id = "RUSTSEC-2020-0107"
package = "hashconsing"
aliases = ["CVE-2020-36215"]
cvss = "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
date = "2020-11-10"
url = "https://github.com/AdrienChampion/hashconsing/issues/1"
categories = ["memory-corruption", "thread-safety"]
keywords = ["concurrency"]
[versions]
patched = [">= 1.1.0"]

hashconsing's HConsed lacks Send/Sync bound for its Send/Sync trait.

Affected versions of hashconsing implements Send/Sync for its HConsed type without restricting it to Sendable types and Syncable types.

This allows non-Sync types such as Cell to be shared across threads leading to undefined behavior and memory corruption in concurrent programs.