Vulnerabilities > CVE-2022-23639 - Unspecified vulnerability in Crossbeam Project Crossbeam
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
crossbeam-utils provides atomics, synchronization primitives, scoped threads, and other utilities for concurrent programming in Rust. crossbeam-utils prior to version 0.8.7 incorrectly assumed that the alignment of `{i,u}64` was always the same as `Atomic{I,U}64`. However, the alignment of `{i,u}64` on a 32-bit target can be smaller than `Atomic{I,U}64`. This can cause unaligned memory accesses and data race. Crates using `fetch_*` methods with `AtomicCell<{i,u}64>` are affected by this issue. 32-bit targets without `Atomic{I,U}64` and 64-bit targets are not affected by this issue. This has been fixed in crossbeam-utils 0.8.7. There are currently no known workarounds.
Vulnerable Configurations
References
- https://github.com/crossbeam-rs/crossbeam/pull/781
- https://github.com/crossbeam-rs/crossbeam/pull/781
- https://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7
- https://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7
- https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926
- https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926