CVE-2026-43440

HIGHNVD 7.87.8
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-08. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: 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/mana: Null service_wq on setup error to prevent double destroy

In mana_gd_setup() error path, set gc->service_wq to NULL after destroy_workqueue() to match the cleanup in mana_gd_cleanup(). This prevents a use-after-free if the workqueue pointer is checked after a failed setup.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.5%
KEV
Not listed

Published

May 8, 2026

Last Modified

May 21, 2026

Advisory Details (3)

Auto-updated Jun 5, 2026
No patch confirmed yet.
generic

net/mana: Null service_wq on setup error to prevent double destroy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/87c2302813abc55c46485711a678e3c312b00666
generic

net/mana: Null service_wq on setup error to prevent double destroy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6c92392602b451e3869f15ab685f8f650e942b13
generic

net/mana: Null service_wq on setup error to prevent double destroy - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/59489ce60d7412ed82fb1d8002faa3102dcd4916

Vendor Advisories for CVE-2026-43440(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 40× 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 129 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. 2026-07-09 19:10 UTCEPSS rescore
  6. 2026-07-08 15:16 UTCEPSS rescore
  7. 2026-07-07 13:46 UTCEPSS rescore
  8. 2026-07-06 16:27 UTCEPSS rescore
  9. 2026-07-06 02:23 UTCEPSS rescore
  10. 2026-07-05 02:30 UTCEPSS rescore
  11. 2026-07-04 06:31 UTCEPSS rescore
  12. 2026-07-01 15:07 UTCEPSS rescore
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-28 04:56 UTCEPSS rescore
  16. 2026-06-28 04:51 UTCEG score recompute
  17. 2026-06-28 04:51 UTCGHSA enrichment
  18. 2026-06-27 13:23 UTCEG score recompute
  19. 2026-06-27 13:22 UTCGHSA enrichment
  20. 2026-06-27 03:08 UTCEPSS rescore
  21. 2026-06-26 21:21 UTCEG score recompute
  22. 2026-06-26 21:21 UTCGHSA enrichment
  23. 2026-06-25 13:49 UTCEPSS rescore
  24. 2026-06-25 13:49 UTCEPSS rescore
  25. 2026-06-24 14:05 UTCEPSS rescore
Show 75 more
  1. 2026-06-23 21:33 UTCEPSS rescore
  2. 2026-06-22 14:25 UTCEPSS rescore
  3. 2026-06-22 14:25 UTCEPSS rescore
  4. 2026-06-21 14:56 UTCEPSS rescore
  5. 2026-06-21 14:56 UTCEPSS rescore
  6. 2026-06-21 01:59 UTCEPSS rescore
  7. 2026-06-19 19:25 UTCEPSS rescore
  8. 2026-06-18 17:52 UTCEPSS rescore
  9. 2026-06-18 17:52 UTCEPSS rescore
  10. 2026-06-17 17:53 UTCEPSS rescore
  11. 2026-06-17 01:28 UTCEG score recompute
  12. 2026-06-17 01:28 UTCGHSA enrichment
  13. 2026-06-16 17:52 UTCEPSS rescore
  14. 2026-06-16 08:11 UTCEG score recompute
  15. 2026-06-16 08:11 UTCGHSA enrichment
  16. 2026-06-15 17:49 UTCEPSS rescore
  17. 2026-06-15 04:58 UTCEG score recompute
  18. 2026-06-15 04:58 UTCGHSA enrichment
  19. 2026-06-14 15:49 UTCEG score recompute
  20. 2026-06-14 15:49 UTCGHSA enrichment
  21. 2026-06-14 02:35 UTCEG score recompute
  22. 2026-06-14 02:35 UTCGHSA enrichment
  23. 2026-06-13 23:00 UTCEPSS rescore
  24. 2026-06-12 23:12 UTCEPSS rescore
  25. 2026-06-12 23:12 UTCEPSS rescore
  26. 2026-06-12 20:03 UTCEG score recompute
  27. 2026-06-12 20:03 UTCGHSA enrichment
  28. 2026-06-12 06:34 UTCEG score recompute
  29. 2026-06-12 06:34 UTCGHSA enrichment
  30. 2026-06-11 17:25 UTCEG score recompute
  31. 2026-06-11 17:25 UTCGHSA enrichment
  32. 2026-06-11 14:00 UTCEPSS rescore
  33. 2026-06-11 04:17 UTCEG score recompute
  34. 2026-06-11 04:17 UTCGHSA enrichment
  35. 2026-06-10 22:18 UTCEPSS rescore
  36. 2026-06-10 15:03 UTCEG score recompute
  37. 2026-06-10 15:03 UTCGHSA enrichment
  38. 2026-06-10 13:22 UTCEPSS rescore
  39. 2026-06-10 13:22 UTCEPSS rescore
  40. 2026-06-10 01:55 UTCEG score recompute
  41. 2026-06-10 01:55 UTCGHSA enrichment
  42. 2026-06-09 12:47 UTCEG score recompute
  43. 2026-06-09 12:47 UTCGHSA enrichment
  44. 2026-06-08 23:39 UTCEG score recompute
  45. 2026-06-08 23:39 UTCGHSA enrichment
  46. 2026-06-08 14:17 UTCEPSS rescore
  47. 2026-06-08 14:17 UTCEPSS rescore
  48. 2026-06-08 10:31 UTCEG score recompute
  49. 2026-06-08 10:31 UTCGHSA enrichment
  50. 2026-06-07 21:23 UTCEG score recompute
  51. 2026-06-07 21:23 UTCGHSA enrichment
  52. 2026-06-07 15:25 UTCEPSS rescore
  53. 2026-06-07 15:25 UTCEPSS rescore
  54. 2026-06-07 08:14 UTCEG score recompute
  55. 2026-06-07 08:14 UTCGHSA enrichment
  56. 2026-06-06 19:06 UTCEG score recompute
  57. 2026-06-06 19:06 UTCGHSA enrichment
  58. 2026-06-06 13:47 UTCEPSS rescore
  59. 2026-06-06 13:47 UTCEPSS rescore
  60. 2026-06-06 05:58 UTCEG score recompute
  61. 2026-06-06 05:58 UTCGHSA enrichment
  62. 2026-06-05 22:47 UTCEPSS rescore
  63. 2026-06-05 16:50 UTCEG score recompute
  64. 2026-06-05 16:50 UTCGHSA enrichment
  65. 2026-06-05 06:10 UTCEPSS rescore
  66. 2026-06-05 06:10 UTCEPSS rescore
  67. 2026-06-05 03:42 UTCEG score recompute
  68. 2026-06-05 03:42 UTCGHSA enrichment
  69. 2026-06-04 14:34 UTCEG score recompute
  70. 2026-06-04 14:34 UTCGHSA enrichment
  71. 2026-06-04 13:12 UTCEPSS rescore
  72. 2026-06-04 13:12 UTCEPSS rescore
  73. 2026-06-04 01:26 UTCEG score recompute
  74. 2026-06-04 01:26 UTCGHSA enrichment
  75. 2026-06-03 12:16 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-43440?
CVE-2026-43440 is a high vulnerability published on May 8, 2026. In the Linux kernel, the following vulnerability has been resolved: net/mana: Null service_wq on setup error to prevent double destroy In managdsetup() error path, set gc->service_wq to NULL after destroyworkqueue() to match the cleanup in managd_cleanup(). This prevents a use-after-free if the…
When was CVE-2026-43440 disclosed?
CVE-2026-43440 was first published in the National Vulnerability Database on May 8, 2026, with the most recent update on May 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43440 actively exploited?
CVE-2026-43440 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43440?
CVE-2026-43440 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-43440?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43440, 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

Explore the affected products and dependency analysis for CVE-2026-43440

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