HOMEVULNERABILITIESCVE-2022-23639
HIGH

CVE-2022-23639

CWE-362Published: February 15, 2022· Updated: Jun 17, 2026

8.1
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2022-23639 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

crossbeam_project1 product(s)
crossbeam
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/crossbeam-rs/crossbeam/pull/781
PATCHhttps://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7
PATCHhttps://github.com/crossbeam-rs/crossbeam/pull/781
PATCHhttps://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7
ADVISORYhttps://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926
ADVISORYhttps://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926

All References (6)

→
https://github.com/crossbeam-rs/crossbeam/pull/781Issue Tracking · Patch · Third Party Advisory
→
https://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7Patch · Third Party Advisory
→
https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926Exploit · Third Party Advisory
→
https://github.com/crossbeam-rs/crossbeam/pull/781Issue Tracking · Patch · Third Party Advisory
→
https://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7Patch · Third Party Advisory
→
https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2022-23639
CVSS Score8.1 / 10
SeverityHIGH
WeaknessCWE-362
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 15, 2022

Related CVEs (CWE-362)

CVE-2010-1228
10.0
CVE-2015-8556
10.0
CVE-2008-6598
10.0
CVE-2014-0703
10.0
CVE-2020-1660
9.9
CVE-2025-43244
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2022-23639 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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