CVE-2020-36454: Data races in parc

August 25, 2021 (updated June 13, 2023)

In the affected versions of this crate, LockWeak unconditionally implemented Send with no trait bounds on T. LockWeak doesn’t own T and only provides &T. This allows concurrent access to a non-Sync T, which can cause undefined behavior like data races.

References

github.com/advisories/GHSA-29v7-3v4c-gf38
github.com/hyyking/rustracts/pull/6
github.com/hyyking/rustracts/tree/master/parc
nvd.nist.gov/vuln/detail/CVE-2020-36454
raw.githubusercontent.com/rustsec/advisory-db/main/crates/parc/RUSTSEC-2020-0134.md
rustsec.org/advisories/RUSTSEC-2020-0134.html

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