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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2022-02-15T18:20:10

Updated: 2024-08-03T03:51:44.181Z

Reserved: 2022-01-19T00:00:00

Link: CVE-2022-23639

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-02-15T19:15:08.340

Modified: 2023-02-10T16:28:40.170

Link: CVE-2022-23639

cve-icon Redhat

No data.