RUSTSEC-2022-0041

Source

https://rustsec.org/advisories/RUSTSEC-2022-0041

Import Source

JSON Data

https://api.osv.dev/v1/vulns/RUSTSEC-2022-0041

Aliases

Published

2022-02-05T12:00:00Z

Modified

2023-11-08T04:08:26.111544Z

Summary

Unsoundness of AtomicCell<*64> arithmetics on 32-bit targets that support Atomic*64

Details

Impact

Affected versions 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)

This has been fixed in crossbeam-utils 0.8.7.

Affected 0.8.x releases have been yanked.

Thanks to @taiki-e

References

{
    "affected_functions": null,
    "affects": {
        "os": [],
        "functions": [],
        "arch": []
    }
}

{
    "cvss": null,
    "informational": "unsound",
    "categories": [
        "memory-corruption"
    ]
}