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+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "internment"
+date = "2021-03-03"
+url = "https://github.com/droundy/internment/issues/20"
+categories = ["thread-safety"]
+
+[versions]
+patched = [">= 0.4.2"]
+```
+
+# Intern<T>: Data race allowed on T
+
+Affected versions of this crate unconditionally implements `Sync` for `Intern<T>`.
+This allows users to create data race on `T: !Sync`, which may lead to undefined behavior
+(for example, memory corruption).
+
+The flaw was corrected in commit 2928a87 by adding the trait bound `T: Sync` in the `Sync` impl of `Intern<T>`.