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Security Advisories: GSA_kwCzR0hTQS1xYzg0LWdxZjQtOTkyNs0sbw

crossbeam-utils Race Condition vulnerability

Impact

The affected version of this crate 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 the following problems:

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.
32-bit targets with Atomic{I,U}64 and {i,u}64 have the same alignment are also not affected by this issue.

The following is a complete list of the builtin targets that may be affected. (last update: nightly-2022-02-11)

(script to get list)

Patches

This has been fixed in crossbeam-utils 0.8.7.

Affected 0.8.x releases have been yanked.

References

https://github.com/crossbeam-rs/crossbeam/pull/781

License

This advisory is in the public domain.

Permalink: https://github.com/advisories/GHSA-qc84-gqf4-9926
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1xYzg0LWdxZjQtOTkyNs0sbw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: about 2 years ago
Updated: about 1 year ago


CVSS Score: 8.1
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-qc84-gqf4-9926, CVE-2022-23639
References: Repository: https://github.com/crossbeam-rs/crossbeam
Blast Radius: 38.1

Affected Packages

cargo:crossbeam-utils
Dependent packages: 375
Dependent repositories: 51,154
Downloads: 192,786,105 total
Affected Version Ranges: < 0.8.7
Fixed in: 0.8.7
All affected versions: 0.1.0, 0.2.0, 0.2.1, 0.2.2, 0.3.0, 0.3.1, 0.3.2, 0.4.0, 0.4.1, 0.5.0, 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5, 0.6.6, 0.7.0, 0.7.1, 0.7.2, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.8.5, 0.8.6
All unaffected versions: 0.8.7, 0.8.8, 0.8.9, 0.8.10, 0.8.11, 0.8.12, 0.8.13, 0.8.14, 0.8.15, 0.8.16, 0.8.17, 0.8.18, 0.8.19