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[advisory]
id = "RUSTSEC-2020-0128"
package = "cache"
date = "2020-11-24"
url = "https://github.com/krl/cache/issues/1"
categories = ["memory-corruption", "thread-safety"]
aliases = ["CVE-2020-36448"]
cvss = "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"

[versions]
patched = []

Cache: Send/Sync impls needs trait bounds on K

Affected versions of this crate unconditionally implement Send/Sync for Cache<K>. This allows users to insert K that is not Send or not Sync.

This allows users to create data races by using non-Send types like Arc<Cell<T>> or Rc<T> as K in Cache<K>. It is also possible to create data races by using types like Cell<T> or RefCell<T> (types that are Send but not Sync). Such data races can lead to memory corruption.