CVE-2026-43219

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet

If an error occurs during register_netdev() for the first MAC in cpsw_register_ports(), even though cpsw->slaves[0].ndev is set to NULL, cpsw->slaves[1].ndev would remain unchanged. This could later cause cpsw_unregister_ports() to attempt unregistering the second MAC. To address this, add a check for ndev->reg_state before calling unregister_netdev(). With this change, setting cpsw->slaves[i].ndev to NULL becomes unnecessary and can be removed accordingly.

CVSS v3
5.5
EG Score
5.5(medium)
EPSS
2.8%
KEV
Not listed

Published

May 6, 2026

Last Modified

July 4, 2026

Advisory Details (7)

Auto-updated Jun 19, 2026
No patch confirmed yet.
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a
generic

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31

Vendor Advisories for CVE-2026-43219(2)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 34× 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 107 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
  4. 2026-07-13 06:13 UTCEPSS rescore
  5. 2026-07-12 05:46 UTCEPSS rescore
  6. 2026-07-11 08:27 UTCEPSS rescore
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-08 15:16 UTCEPSS rescore
  9. 2026-07-07 13:46 UTCEPSS rescore
  10. 2026-07-06 16:27 UTCEPSS rescore
  11. 2026-07-06 02:23 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 12:27 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  14. 2026-07-04 12:16 UTCMITRE cvelistV5
  15. 2026-07-04 06:31 UTCEPSS rescore
  16. 2026-07-01 15:06 UTCEPSS rescore
  17. 2026-06-30 23:22 UTCEPSS rescore
  18. 2026-06-29 14:06 UTCEPSS rescore
  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-27 03:08 UTCEPSS rescore
  22. 2026-06-25 13:49 UTCEPSS rescore
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-23 21:33 UTCEPSS rescore
  25. 2026-06-22 14:25 UTCEPSS rescore
Show 75 more
  1. 2026-06-22 14:25 UTCEPSS rescore
  2. 2026-06-21 14:56 UTCEPSS rescore
  3. 2026-06-21 14:56 UTCEPSS rescore
  4. 2026-06-21 01:59 UTCEPSS rescore
  5. 2026-06-19 19:25 UTCEPSS rescore
  6. 2026-06-18 17:52 UTCEPSS rescore
  7. 2026-06-18 17:52 UTCEPSS rescore
  8. 2026-06-17 17:53 UTCEPSS rescore
  9. 2026-06-16 17:52 UTCEPSS rescore
  10. 2026-06-15 17:49 UTCEPSS rescore
  11. 2026-06-15 06:00 UTCEG score recompute
  12. 2026-06-15 06:00 UTCGHSA enrichment
  13. 2026-06-14 07:35 UTCEG score recompute
  14. 2026-06-14 07:35 UTCGHSA enrichment
  15. 2026-06-13 23:00 UTCEPSS rescore
  16. 2026-06-13 00:00 UTCEG score recompute
  17. 2026-06-13 00:00 UTCGHSA enrichment
  18. 2026-06-12 23:12 UTCEPSS rescore
  19. 2026-06-12 23:12 UTCEPSS rescore
  20. 2026-06-11 19:47 UTCEG score recompute
  21. 2026-06-11 19:47 UTCGHSA enrichment
  22. 2026-06-11 14:00 UTCEPSS rescore
  23. 2026-06-10 22:18 UTCEPSS rescore
  24. 2026-06-10 21:25 UTCEG score recompute
  25. 2026-06-10 21:25 UTCGHSA enrichment
  26. 2026-06-10 13:22 UTCEPSS rescore
  27. 2026-06-10 13:22 UTCEPSS rescore
  28. 2026-06-09 23:02 UTCEG score recompute
  29. 2026-06-09 23:02 UTCGHSA enrichment
  30. 2026-06-09 11:29 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  31. 2026-06-09 11:19 UTCMITRE cvelistV5
  32. 2026-06-08 22:13 UTCEG score recompute
  33. 2026-06-08 22:13 UTCGHSA enrichment
  34. 2026-06-08 14:17 UTCEPSS rescore
  35. 2026-06-08 14:17 UTCEPSS rescore
  36. 2026-06-07 22:12 UTCEG score recompute
  37. 2026-06-07 22:12 UTCGHSA enrichment
  38. 2026-06-07 15:25 UTCEPSS rescore
  39. 2026-06-07 15:25 UTCEPSS rescore
  40. 2026-06-06 23:50 UTCEG score recompute
  41. 2026-06-06 23:50 UTCGHSA enrichment
  42. 2026-06-06 13:47 UTCEPSS rescore
  43. 2026-06-06 13:47 UTCEPSS rescore
  44. 2026-06-06 01:28 UTCEG score recompute
  45. 2026-06-06 01:28 UTCGHSA enrichment
  46. 2026-06-05 22:47 UTCEPSS rescore
  47. 2026-06-05 06:10 UTCEPSS rescore
  48. 2026-06-05 06:10 UTCEPSS rescore
  49. 2026-06-05 03:04 UTCEG score recompute
  50. 2026-06-05 03:04 UTCGHSA enrichment
  51. 2026-06-04 13:12 UTCEPSS rescore
  52. 2026-06-04 13:12 UTCEPSS rescore
  53. 2026-06-04 04:41 UTCEG score recompute
  54. 2026-06-04 04:41 UTCGHSA enrichment
  55. 2026-06-03 06:17 UTCEG score recompute
  56. 2026-06-03 06:17 UTCGHSA enrichment
  57. 2026-06-02 20:13 UTCEPSS rescore
  58. 2026-06-02 07:55 UTCEG score recompute
  59. 2026-06-02 07:55 UTCGHSA enrichment
  60. 2026-06-01 13:52 UTCEPSS rescore
  61. 2026-06-01 13:52 UTCEPSS rescore
  62. 2026-06-01 09:33 UTCEG score recompute
  63. 2026-06-01 09:33 UTCGHSA enrichment
  64. 2026-05-31 22:30 UTCEPSS rescore
  65. 2026-05-31 22:30 UTCEPSS rescore
  66. 2026-05-31 00:16 UTCEPSS rescore
  67. 2026-05-31 00:16 UTCEPSS rescore
  68. 2026-05-29 13:44 UTCEPSS rescore
  69. 2026-05-29 13:44 UTCEPSS rescore
  70. 2026-05-28 13:44 UTCEPSS rescore
  71. 2026-05-28 13:44 UTCEPSS rescore
  72. 2026-05-27 13:40 UTCEPSS rescore
  73. 2026-05-27 13:40 UTCEPSS rescore
  74. 2026-05-26 13:44 UTCEPSS rescore
  75. 2026-05-26 07:18 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-43219?
CVE-2026-43219 is a medium vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: net: cpsw_new: Fix potential unregister of netdev that has not been registered yet If an error occurs during register_netdev() for the first MAC in cpswregisterports(), even though cpsw->slaves[0].ndev is set to NULL,…
When was CVE-2026-43219 disclosed?
CVE-2026-43219 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on July 4, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43219 actively exploited?
CVE-2026-43219 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43219?
CVE-2026-43219 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-43219?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43219, 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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