CVE-2026-43276

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-06. 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

A fix is available — apply it.

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

net: mana: Fix double destroy_workqueue on service rescan PCI path

While testing corner cases in the driver, a use-after-free crash was found on the service rescan PCI path.

When mana_serv_reset() calls mana_gd_suspend(), mana_gd_cleanup() destroys gc->service_wq. If the subsequent mana_gd_resume() fails with -ETIMEDOUT or -EPROTO, the code falls through to mana_serv_rescan() which triggers pci_stop_and_remove_bus_device(). This invokes the PCI .remove callback (mana_gd_remove), which calls mana_gd_cleanup() a second time, attempting to destroy the already- freed workqueue. Fix this by NULL-checking gc->service_wq in mana_gd_cleanup() and setting it to NULL after destruction.

Call stack of issue for reference: [Sat Feb 21 18:53:48 2026] Call Trace: [Sat Feb 21 18:53:48 2026] [Sat Feb 21 18:53:48 2026] mana_gd_cleanup+0x33/0x70 [mana] [Sat Feb 21 18:53:48 2026] mana_gd_remove+0x3a/0xc0 [mana] [Sat Feb 21 18:53:48 2026] pci_device_remove+0x41/0xb0 [Sat Feb 21 18:53:48 2026] device_remove+0x46/0x70 [Sat Feb 21 18:53:48 2026] device_release_driver_internal+0x1e3/0x250 [Sat Feb 21 18:53:48 2026] device_release_driver+0x12/0x20 [Sat Feb 21 18:53:48 2026] pci_stop_bus_device+0x6a/0x90 [Sat Feb 21 18:53:48 2026] pci_stop_and_remove_bus_device+0x13/0x30 [Sat Feb 21 18:53:48 2026] mana_do_service+0x180/0x290 [mana] [Sat Feb 21 18:53:48 2026] mana_serv_func+0x24/0x50 [mana] [Sat Feb 21 18:53:48 2026] process_one_work+0x190/0x3d0 [Sat Feb 21 18:53:48 2026] worker_thread+0x16e/0x2e0 [Sat Feb 21 18:53:48 2026] kthread+0xf7/0x130 [Sat Feb 21 18:53:48 2026] ? __pfx_worker_thread+0x10/0x10 [Sat Feb 21 18:53:48 2026] ? __pfx_kthread+0x10/0x10 [Sat Feb 21 18:53:48 2026] ret_from_fork+0x269/0x350 [Sat Feb 21 18:53:48 2026] ? __pfx_kthread+0x10/0x10 [Sat Feb 21 18:53:48 2026] ret_from_fork_asm+0x1a/0x30 [Sat Feb 21 18:53:48 2026]

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.0%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 8, 2026

Advisory Details (3)

Auto-updated May 8, 2026
No patch confirmed yet.
generic

net: mana: Fix double destroy_workqueue on service rescan PCI path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/fa3c2f8d9152344a478abb847081c1b5f84a94f5
generic

net: mana: Fix double destroy_workqueue on service rescan PCI path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f975a0955276579e2176a134366ed586071c7c6a
generic

net: mana: Fix double destroy_workqueue on service rescan PCI path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/a9a7c3203fdc4d4a8d8a7a3b1ed05d2bb4c6e77e

Vendor Advisories for CVE-2026-43276(2)

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

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-azure-6.17 (6.17.0-1015.15) @ questing2026-06-15ubuntu
linuxKernel @ 6.18.16—osv

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(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 8× 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 130 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-43276?
CVE-2026-43276 is a high vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: net: mana: Fix double destroy_workqueue on service rescan PCI path While testing corner cases in the driver, a use-after-free crash was found on the service rescan PCI path. When manaservreset() calls managdsuspend(),…
When was CVE-2026-43276 disclosed?
CVE-2026-43276 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43276 actively exploited?
CVE-2026-43276 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43276?
CVE-2026-43276 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-43276?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43276, 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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