RUSTSEC-2022-0041

Source
https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2022-0041.json
Aliases
Published
2022-02-05T12:00:00Z
Modified
2022-08-04T13:56:30Z
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:

  • Unaligned memory accesses
  • 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.

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)

  • armv7-apple-ios (tier 3)
  • armv7s-apple-ios (tier 3)
  • i386-apple-ios (tier 3)
  • i586-unknown-linux-gnu
  • i586-unknown-linux-musl
  • i686-apple-darwin (tier 3)
  • i686-linux-android
  • i686-unknown-freebsd
  • i686-unknown-haiku (tier 3)
  • i686-unknown-linux-gnu
  • i686-unknown-linux-musl
  • i686-unknown-netbsd (tier 3)
  • i686-unknown-openbsd (tier 3)
  • i686-wrs-vxworks (tier 3)

(script to get list)

Patches

This has been fixed in crossbeam-utils 0.8.7.

Affected 0.8.x releases have been yanked.

Thanks to @taiki-e

References

Affected packages

crates.io / crossbeam-utils

crossbeam-utils

Affected ranges

Type
SEMVER
Events
Introduced
0.0.0-0
Fixed
0.8.7

Affected versions

Ecosystem specific

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

Database specific

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