CVSS 3.1
8.1 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2022-23639
High (8.1) in crossbeam project crossbeam. EPSS 1.2% chance of exploitation in the next 30 days. Fixed in crossbeam-utils 0.8.7.
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.
Severity
- EPSS
- 1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
- CWE
- CWE-362
- Published
- Modified
- Record from
- the NVD, synced
Affected
- crossbeam_project:crossbeam
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-qc84-gqf4-9926 | crates.io | crossbeam-utils | <0.8.7 | 0.8.7 |
| RUSTSEC-2022-0041 | crates.io | crossbeam-utils | >=0.0.0-0 <0.8.7 | 0.8.7 |
References
- 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/security/advisories/GHSA-qc84-gqf4-9926
- https://github.com/crossbeam-rs/crossbeam/pull/781
- https://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7