CVE-2026-45989

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-27. 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:

of: unittest: fix use-after-free in testdrv_probe()

The function testdrv_probe() retrieves the device_node from the PCI device, applies an overlay, and then immediately calls of_node_put(dn). This releases the reference held by the PCI core, potentially freeing the node if the reference count drops to zero. Later, the same freed pointer 'dn' is passed to of_platform_default_populate(), leading to a use-after-free.

The reference to pdev->dev.of_node is owned by the device model and should not be released by the driver. Remove the erroneous of_node_put() to prevent premature freeing.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

May 27, 2026

Last Modified

June 16, 2026

Advisory Details (5)

Auto-updated Jun 16, 2026
No patch confirmed yet.
generic

of: unittest: fix use-after-free in testdrv_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c
generic

of: unittest: fix use-after-free in testdrv_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69
generic

of: unittest: fix use-after-free in testdrv_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8
generic

of: unittest: fix use-after-free in testdrv_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc
generic

of: unittest: fix use-after-free in testdrv_probe() - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56

Vendor Advisories for CVE-2026-45989(2)

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

Patch Availability(20)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-virtual-hwe-26.04-edge (7.0.0-27.27) @ resolute2026-08-25ubuntu
ubuntulinux-tools-oem-7.0 (7.0.0-1008.8) @ resolute2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1014.14) @ resolute2026-08-25ubuntu
ubuntulinux-tools-raspi-realtime-6.8 (6.8.0-2050.52) @ noble2026-08-25ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1013.13) @ resolute2026-08-25ubuntu
ubuntulinux-virtual-6.8 (6.8.0-136.136) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-24.04-edge (7.0.0-28.28~24.04.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-gcp-fips-6.8 (6.8.0-1064.72+fips1) @ noble2026-08-25ubuntu
ubuntulinux-tools-lowlatency-hwe-22.04-edge (6.8.0-136.136.2~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-oracle-edge (6.8.0-1058.61~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-nvidia-lowlatency-64k-6.8 (6.8.0-1059.62.1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-25ubuntu
ubuntulinux-tools-aws-lts-24.04 (6.8.0-1061.64+1) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1063.71) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-lts-24.04 (6.8.0-1062.69) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fips-6.8 (6.8.0-1063.71+fips2) @ noble2026-08-25ubuntu
ubuntulinux-tools-azure-fde-6.8 (6.8.0-1062.69~22.04.1) @ jammy2026-08-25ubuntu
ubuntulinux-tools-aws-fips-6.8 (6.8.0-1061.64+fips1) @ noble2026-08-25ubuntu
ubuntulinux-xilinx-zynqmp (6.8.0.1033.34) @ noble2026-08-25ubuntu
ubuntulinux-virtual-hwe-22.04-edge (6.8.0-136.136~22.04.1) @ jammy2026-08-25ubuntu

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

(2 across 2 ecosystems)
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.86-1~bpo12+1 (19 versions)6.12.86-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.4-1~bpo13+1 (131 versions)7.0.4-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(20)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 5× in last 7d / 87× 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 240 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-45989?
CVE-2026-45989 is a high vulnerability published on May 27, 2026. In the Linux kernel, the following vulnerability has been resolved: of: unittest: fix use-after-free in testdrv_probe() The function testdrvprobe() retrieves the devicenode from the PCI device, applies an overlay, and then immediately calls ofnodeput(dn). This releases the reference held by the PCI…
When was CVE-2026-45989 disclosed?
CVE-2026-45989 was first published in the National Vulnerability Database on May 27, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45989 actively exploited?
CVE-2026-45989 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 94.2% of all scored CVEs.
What is the CVSS score of CVE-2026-45989?
CVE-2026-45989 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-45989?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45989, 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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