CVE-2022-23639

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 1.2% (67th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.2%CVSS: 8.1Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
52
EG Risk 52/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
1.2%
EPSS %ILE
68th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

February 15, 2022

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Sep 18, 2026
Patch available. Sources: github, github_pr, github_release.
githubMentions a patch (unverified)

Unsoundness of AtomicCell<{i,u}64> arithmetics on 32-bit targets that support Atomic{I,U}64 · Advisory · crossbeam-rs/crossbeam · GitHub

https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-qc84-gqf4-9926
github_release Patch Available

crossbeam-utils 0.8.7

Patch available: crossbeam-rs/crossbeam crossbeam-utils-0.8.7

https://github.com/crossbeam-rs/crossbeam/releases/tag/crossbeam-utils-0.8.7
github_pr Patch Available

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

Patch available: crossbeam-rs/crossbeam crossbeam-utils-0.8.18 (PR #781 merged 2022-02-05)

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

Vendor Advisories for CVE-2022-23639(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(5 across 5 ecosystems)
crates.io(1)
PackageVulnerable rangeFix by version rangeDependents
crossbeam-utils—
  • every version up to 0.8.7: fixed in 0.8.7
  • 0.0.0-0 up to 0.8.7: fixed in 0.8.7
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
rust-crossbeam-utils0.7.2-2 ... 0.8.8-1 (9 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
rust-crossbeam-utils—
  • every version up to 0.8.8-1: fixed in 0.8.8-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
rust-crossbeam-utils—
  • every version up to 0.8.8-1: fixed in 0.8.8-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
rust-crossbeam-utils—
  • every version up to 0.8.8-1: fixed in 0.8.8-1
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 172 total refreshes for this CVE.

  1. 2026-10-10 19:56 UTCEPSS rescore
  2. 2026-10-09 20:04 UTCEPSS rescore
  3. 2026-10-08 16:40 UTCEPSS rescore
  4. 2026-10-07 23:45 UTCEPSS rescore
  5. 2026-10-06 15:14 UTCEPSS rescore
  6. 2026-10-05 17:40 UTCEPSS rescore
  7. 2026-10-04 23:19 UTCEPSS rescore
  8. 2026-10-03 14:23 UTCEPSS rescore
  9. 2026-10-03 14:22 UTCEPSS rescore
  10. 2026-09-30 15:50 UTCEG score recompute
  11. 2026-09-30 15:00 UTCEPSS rescore
  12. 2026-09-29 15:15 UTCEPSS rescore
  13. 2026-09-28 13:48 UTCEPSS rescore
  14. 2026-09-27 13:41 UTCEPSS rescore
  15. 2026-09-26 00:22 UTCEPSS rescore
  16. 2026-09-25 05:05 UTCOSV refresh
  17. 2026-09-24 14:00 UTCEPSS rescore
  18. 2026-09-23 13:45 UTCEPSS rescore
  19. 2026-09-20 20:13 UTCEPSS rescore
  20. 2026-09-17 19:23 UTCEPSS rescore
  21. 2026-09-16 14:05 UTCEPSS rescore
  22. 2026-09-15 03:06 UTCEPSS rescore
  23. 2026-09-13 16:43 UTCEPSS rescore
  24. 2026-09-12 14:57 UTCEPSS rescore
  25. 2026-09-11 14:49 UTCEPSS rescore
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  1. 2026-09-11 09:33 UTCEPSS rescore
  2. 2026-09-08 21:57 UTCEPSS rescore
  3. 2026-09-07 15:58 UTCEPSS rescore
  4. 2026-09-06 13:45 UTCEPSS rescore
  5. 2026-09-05 20:51 UTCOSV refresh
  6. 2026-09-05 15:25 UTCEPSS rescore
  7. 2026-09-04 13:57 UTCEPSS rescore
  8. 2026-09-04 05:04 UTCEPSS rescore
  9. 2026-09-02 14:09 UTCEPSS rescore
  10. 2026-09-01 13:51 UTCEPSS rescore
  11. 2026-08-30 19:14 UTCEPSS rescore
  12. 2026-08-30 01:19 UTCEPSS rescore
  13. 2026-08-28 21:38 UTCEPSS rescore
  14. 2026-08-27 14:22 UTCEPSS rescore
  15. 2026-08-26 14:43 UTCEPSS rescore
  16. 2026-08-25 13:46 UTCEPSS rescore
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  18. 2026-08-24 14:13 UTCEPSS rescore
  19. 2026-08-21 23:46 UTCEPSS rescore
  20. 2026-08-20 22:52 UTCEPSS rescore
  21. 2026-08-19 17:01 UTCEPSS rescore
  22. 2026-08-19 07:59 UTCOSV refresh
  23. 2026-08-18 13:45 UTCEPSS rescore
  24. 2026-08-16 14:53 UTCEPSS rescore
  25. 2026-08-16 02:11 UTCEPSS rescore
  26. 2026-08-15 01:27 UTCEPSS rescore
  27. 2026-08-13 21:57 UTCEPSS rescore
  28. 2026-08-12 13:48 UTCEPSS rescore
  29. 2026-08-09 13:44 UTCEPSS rescore
  30. 2026-08-08 16:34 UTCEPSS rescore
  31. 2026-08-07 16:24 UTCEPSS rescore
  32. 2026-08-06 13:44 UTCEPSS rescore
  33. 2026-08-05 19:15 UTCEPSS rescore
  34. 2026-08-04 10:34 UTCEPSS rescore
  35. 2026-08-04 03:27 UTCOSV refresh
  36. 2026-08-03 10:33 UTCEPSS rescore
  37. 2026-08-02 02:24 UTCEPSS rescore
  38. 2026-08-01 04:13 UTCEPSS rescore
  39. 2026-07-30 16:25 UTCEPSS rescore
  40. 2026-07-30 01:28 UTCEPSS rescore
  41. 2026-07-28 15:33 UTCEPSS rescore
  42. 2026-07-26 14:52 UTCEPSS rescore
  43. 2026-07-26 14:52 UTCEPSS rescore
  44. 2026-07-25 14:15 UTCEPSS rescore
  45. 2026-07-24 14:15 UTCEPSS rescore
  46. 2026-07-23 14:16 UTCEPSS rescore
  47. 2026-07-23 02:08 UTCEG score recompute
  48. 2026-07-22 22:55 UTCEG score recompute
  49. 2026-07-22 14:06 UTCEPSS rescore
  50. 2026-07-22 14:06 UTCEPSS rescore
  51. 2026-07-21 15:22 UTCEPSS rescore
  52. 2026-07-21 15:22 UTCEPSS rescore
  53. 2026-07-20 17:05 UTCEPSS rescore
  54. 2026-07-19 02:27 UTCEPSS rescore
  55. 2026-07-18 10:02 UTCEPSS rescore
  56. 2026-07-18 10:02 UTCEPSS rescore
  57. 2026-07-17 22:59 UTCOSV refresh
  58. 2026-07-16 17:00 UTCEPSS rescore
  59. 2026-07-16 17:00 UTCEPSS rescore
  60. 2026-07-15 16:56 UTCEPSS rescore
  61. 2026-07-15 16:56 UTCEPSS rescore
  62. 2026-07-15 01:58 UTCEPSS rescore
  63. 2026-07-15 01:58 UTCEPSS rescore
  64. 2026-07-13 22:27 UTCEPSS rescore
  65. 2026-07-12 05:44 UTCEPSS rescore
  66. 2026-07-11 08:25 UTCEPSS rescore
  67. 2026-07-09 19:07 UTCEPSS rescore
  68. 2026-07-08 15:12 UTCEPSS rescore
  69. 2026-07-07 13:44 UTCEPSS rescore
  70. 2026-07-06 16:25 UTCEPSS rescore
  71. 2026-07-06 16:25 UTCEPSS rescore
  72. 2026-07-06 02:21 UTCEPSS rescore
  73. 2026-07-05 02:28 UTCEPSS rescore
  74. 2026-07-04 06:29 UTCEPSS rescore
  75. 2026-07-04 06:29 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-23639?
CVE-2022-23639 is a high vulnerability published on February 15, 2022. 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…
When was CVE-2022-23639 disclosed?
CVE-2022-23639 was first published on February 15, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-23639 actively exploited?
CVE-2022-23639 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.2% probability of exploitation in the next 30 days (68th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2022-23639?
CVE-2022-23639 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2022-23639?
A fix for CVE-2022-23639 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2022-23639 are linked in the Vendor Advisories panel on this page.

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