CVE-2026-43056

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-01. 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 use-after-free in add_adev() error path

If auxiliary_device_add() fails, add_adev() jumps to add_fail and calls auxiliary_device_uninit(adev).

The auxiliary device has its release callback set to adev_release(), which frees the containing struct mana_adev. Since adev is embedded in struct mana_adev, the subsequent fall-through to init_fail and access to adev->id may result in a use-after-free.

Fix this by saving the allocated auxiliary device id in a local variable before calling auxiliary_device_add(), and use that saved id in the cleanup path after auxiliary_device_uninit().

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
1.9%
KEV
Not listed

Published

May 1, 2026

Last Modified

May 7, 2026

Advisory Details (5)

Auto-updated May 3, 2026
No patch confirmed yet.
generic

net: mana: fix use-after-free in add_adev() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/e5a75bf026c686b91a7dc6f9c5caf5016745d1fe
generic

net: mana: fix use-after-free in add_adev() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d88541ffd56d62a61e77209080001eddd4d69815
generic

net: mana: fix use-after-free in add_adev() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/c4ea7d8907cf72b259bf70bd8c2e791e1c4ff70f
generic

net: mana: fix use-after-free in add_adev() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5f4061f8225d18695e5afe9bbf1cb7bd673d7872
generic

net: mana: fix use-after-free in add_adev() error path - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/43f5b19fd190fea20d052bc84741b28031d5baa9

Vendor Advisories for CVE-2026-43056(4)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:5.14.0-687.15.1.el9_82026-06-11redhat

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.

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.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-43056?
CVE-2026-43056 is a high vulnerability published on May 1, 2026. In the Linux kernel, the following vulnerability has been resolved: net: mana: fix use-after-free in add_adev() error path If auxiliarydeviceadd() fails, addadev() jumps to addfail and calls auxiliarydeviceuninit(adev). The auxiliary device has its release callback set to adev_release(), which…
When was CVE-2026-43056 disclosed?
CVE-2026-43056 was first published in the National Vulnerability Database on May 1, 2026, with the most recent update on May 7, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43056 actively exploited?
CVE-2026-43056 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43056?
CVE-2026-43056 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-43056?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43056, 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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