CVE-2021-47194

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2024-04-10. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.8Exploit: None knownExposed: 0

A fix is available — apply it.

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

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type

If the userspace tools switch from NL80211_IFTYPE_P2P_GO to NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it does not call the cleanup cfg80211_stop_ap(), this leads to the initialization of in-use data. For example, this path re-init the sdata->assigned_chanctx_list while it is still an element of assigned_vifs list, and makes that linked list corrupt.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

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
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

April 10, 2024

Last Modified

August 5, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
No patch confirmed yet.
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2
generic

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-lts-xenial (4.4.0.257.263) @ xenial2026-05-24ubuntu

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.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
linux5.10.46-4, 5.10.46-5, 5.10.70-1, 5.10.70-1~bpo10+15.10.84-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux—5.15.5-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux—5.15.5-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux—5.15.5-1—

Weakness Classification(1)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 6× in last 7d / 27× 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 166 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2021-47194?
CVE-2021-47194 is a high vulnerability published on April 10, 2024. In the Linux kernel, the following vulnerability has been resolved: cfg80211: call cfg80211stopap when switch from P2P_GO type If the userspace tools switch from NL80211IFTYPEP2P_GO to NL80211IFTYPEADHOC via sendmsg(NL80211CMDSETINTERFACE), it does not call the cleanup cfg80211stopap(), this leads…
When was CVE-2021-47194 disclosed?
CVE-2021-47194 was first published in the National Vulnerability Database on April 10, 2024, with the most recent update on August 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-47194 actively exploited?
CVE-2021-47194 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.4% of all scored CVEs.
What is the CVSS score of CVE-2021-47194?
CVE-2021-47194 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2021-47194?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-47194, 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.

Dependency Blast Radius

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