CVE-2026-46166

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-28. a secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: use safe list iteration in radar detect work

The call to ieee80211_dfs_cac_cancel can cause the iterated chanctx to be freed and removed from the list. Guard against this to avoid a slab-use-after-free error.

CVSS v3
8.8
EG Score
8.8(medium)
EPSS
10.3%
KEV
Not listed

Published

May 28, 2026

Last Modified

July 15, 2026

Advisory Details (4)

Auto-updated Jun 2, 2026
No patch confirmed yet.
generic

wifi: mac80211: use safe list iteration in radar detect work - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/ac8eb3e18f41e2cc8492cc1d358bcb786c850270
generic

wifi: mac80211: use safe list iteration in radar detect work - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/887ece6c23b49d02a6678e7a8d5ad213d75883ce
generic

wifi: mac80211: use safe list iteration in radar detect work - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7577a4b8a10fab45a6ee2045ea038a5adadbb585
generic

wifi: mac80211: use safe list iteration in radar detect work - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/120149fb3ebcf674832ca3cafd32bedcdb686dde

Vendor Advisories for CVE-2026-46166(5)

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

Patch Availability(4)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:6.12.0-55.84.1.el10_02026-06-29redhat
redhatkernel-0:5.14.0-687.17.1.el9_82026-06-22redhat
redhatkernel-0:5.14.0-570.123.1.el9_62026-06-22redhat
redhatkernel-0:6.12.0-211.26.1.el10_22026-06-20redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 91× 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 188 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-46166?
CVE-2026-46166 is a high vulnerability published on May 28, 2026. In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: use safe list iteration in radar detect work The call to ieee80211dfscac_cancel can cause the iterated chanctx to be freed and removed from the list. Guard against this to avoid a slab-use-after-free error.
When was CVE-2026-46166 disclosed?
CVE-2026-46166 was first published in the National Vulnerability Database on May 28, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46166 actively exploited?
CVE-2026-46166 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 10.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46166?
CVE-2026-46166 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-46166?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46166, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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