🛡️ UBUNTU-CVE-2022-23639
⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

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` 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.

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2022-02-15
Updated 2026-06-15
Modified 2026-05-20
Fix URL N/A

Affected Packages

Software From version Fixed in
cargo — —
firefox — 1:1snap1-0ubuntu1
mozjs38 — —
mozjs52 — —
mozjs68 — —
mozjs78 — —
rust-crossbeam-utils — —
rust-crossbeam-utils-0.7 — —
rustc — 1.58.1+dfsg1~ubuntu1-0ubuntu1
thunderbird — —

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