CVE-2022-23639

 

Published at: - 15-02-2022 08:15

Last modified: - 09-06-2022 06:15

Total changes: - 3

Description

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• 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

 

Keywords

NVD

 

CVE-2022-23639

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures