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EUVD-2026-48056

fkie_cve-2020-36219

An issue was discovered in the atomic-option crate through 2020-10-31 for Rust. Because AtomicOption<T> implements Sync unconditionally, a data race can occur.

GHSA-8gf5-q9p9-wvmc — Data race in atomic-option

Affected: crates.io: atomic-option

An issue was discovered in the atomic-option crate through 2020-10-31 for Rust. Because AtomicOption<T> implements Sync unconditionally, a data race can occur.

gsd-2020-36219

RUSTSEC-2020-0113 — AtomicOption should have Send + Sync bound on its type argument.

Affected: crates.io: atomic-option

In the affected versions of this crate, `AtomicOption<T>` unconditionally implements `Sync`.

This allows programmers to move non-Sync types across thread boundaries (e.g. `Rc<T>`, `Arc<Cell<T>>`), which can lead to data races and undefined behavior. It is also possible to send non-Send types like `std::sync::MutexGuard` to other threads, which can lead to undefined behavior.