CVE-2026-64166

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-19. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

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

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration

The bus match callback assumes that every FF-A driver provides an id_table and dereferences it unconditionally. Enforce that contract at registration time so a buggy client driver cannot crash the bus during match.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 19, 2026

Last Modified

August 13, 2026

Advisory Details (7)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/f98f131256beaddd51ad468e95d90d857fef12bf
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/bc499d1acddbb75b5b4bce05f5296dd8ef9611fd
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/adfff93d08a2e12ecf2a1eba272d18bc749f13c0
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/820245d86ce58898fb48b4fefc77d0cafc02801d
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/34f59211984f66788390e7469f3e99d3796db4a8
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/198f6c86d508ed562f07dc00276cac6dbb5dd3bf
generic

firmware: arm_ffa: Check for NULL FF-A ID table while driver registration - kernel/git/stable/linux.git - Linux kernel stable tree

https://git.kernel.org/stable/c/0a5e695095c557d2380131b613dea4e8d90371be

Vendor Advisories for CVE-2026-64166(1)

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

Patch Availability(19)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-09-18ubuntu
ubuntulinux-tools-intel-iot-realtime-5.15 (5.15.0.1104.108) @ jammy2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-09-18ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-09-18ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16) @ resolute2026-09-18ubuntu
ubuntulinux-virtual-6.8 (6.8.0-139.139) @ noble2026-09-18ubuntu
ubuntulinux-tools-azure-lts-24.04 (6.8.0-1067.75) @ noble2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (7.0.0-1011.11~24.04.1) @ noble2026-09-18ubuntu
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-09-18ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-09-18ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-09-18ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-09-18ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-09-18ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-09-18ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-09-18ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-09-18ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-09-18ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-09-18ubuntu

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

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
linux6.1.106-1 ... 6.1.99-1 (53 versions)6.1.176-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
linux6.12.38-1 ... 6.12.94-1~bpo12+1 (27 versions)6.12.94-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
linux6.12.100-1 ... 7.0.9-1~bpo13+1 (141 versions)7.0.12-1—

Weakness Classification(1)

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

All Vendor Advisories

(19)

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 11× in last 7d / 65× 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 145 total refreshes for this CVE.

  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 04:07 UTCEG score recompute
  3. 2026-09-18 04:07 UTCVendor advisory
  4. 2026-09-18 04:07 UTCGHSA enrichment
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 12:52 UTCEG score recompute
  7. 2026-09-16 12:52 UTCVendor advisory
  8. 2026-09-16 12:51 UTCGHSA enrichment
  9. 2026-09-13 22:53 UTCEG score recompute
  10. 2026-09-13 22:53 UTCVendor advisory
  11. 2026-09-13 22:52 UTCGHSA enrichment
  12. 2026-09-12 19:31 UTCVendor advisory
  13. 2026-09-12 19:31 UTCGHSA enrichment
  14. 2026-09-11 18:37 UTCEG score recompute
  15. 2026-09-11 18:37 UTCVendor advisory
  16. 2026-09-11 18:37 UTCGHSA enrichment
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-11 09:37 UTCEPSS rescore
  19. 2026-09-09 12:35 UTCEG score recompute
  20. 2026-09-09 12:35 UTCGHSA enrichment
  21. 2026-09-08 22:01 UTCEPSS rescore
  22. 2026-09-07 23:04 UTCEG score recompute
  23. 2026-09-07 23:04 UTCVendor advisory
  24. 2026-09-07 23:03 UTCGHSA enrichment
  25. 2026-09-07 16:01 UTCEPSS rescore
Show 75 more
  1. 2026-09-06 13:47 UTCEPSS rescore
  2. 2026-09-06 12:00 UTCVendor advisory
  3. 2026-09-06 11:59 UTCGHSA enrichment
  4. 2026-09-05 09:46 UTCEG score recompute
  5. 2026-09-05 09:46 UTCVendor advisory
  6. 2026-09-05 09:46 UTCGHSA enrichment
  7. 2026-09-04 05:07 UTCEPSS rescore
  8. 2026-09-02 14:12 UTCEPSS rescore
  9. 2026-09-01 13:54 UTCEPSS rescore
  10. 2026-09-01 04:40 UTCEPSS rescore
  11. 2026-08-31 03:17 UTCEG score recompute
  12. 2026-08-31 03:17 UTCVendor advisory
  13. 2026-08-31 03:17 UTCGHSA enrichment
  14. 2026-08-30 19:17 UTCEPSS rescore
  15. 2026-08-30 02:44 UTCEG score recompute
  16. 2026-08-30 02:44 UTCVendor advisory
  17. 2026-08-30 02:44 UTCGHSA enrichment
  18. 2026-08-28 21:42 UTCEPSS rescore
  19. 2026-08-28 02:27 UTCEG score recompute
  20. 2026-08-28 02:27 UTCVendor advisory
  21. 2026-08-28 02:27 UTCGHSA enrichment
  22. 2026-08-27 02:00 UTCEG score recompute
  23. 2026-08-27 02:00 UTCVendor advisory
  24. 2026-08-27 02:00 UTCGHSA enrichment
  25. 2026-08-26 14:46 UTCEPSS rescore
  26. 2026-08-26 01:34 UTCEG score recompute
  27. 2026-08-26 01:34 UTCVendor advisory
  28. 2026-08-26 01:33 UTCGHSA enrichment
  29. 2026-08-25 13:49 UTCEPSS rescore
  30. 2026-08-25 01:08 UTCEG score recompute
  31. 2026-08-25 01:08 UTCVendor advisory
  32. 2026-08-25 01:07 UTCGHSA enrichment
  33. 2026-08-24 00:41 UTCVendor advisory
  34. 2026-08-24 00:41 UTCGHSA enrichment
  35. 2026-08-23 00:14 UTCEG score recompute
  36. 2026-08-23 00:14 UTCVendor advisory
  37. 2026-08-23 00:14 UTCGHSA enrichment
  38. 2026-08-21 23:49 UTCEPSS rescore
  39. 2026-08-21 23:48 UTCVendor advisory
  40. 2026-08-21 23:48 UTCGHSA enrichment
  41. 2026-08-20 23:22 UTCEG score recompute
  42. 2026-08-20 23:22 UTCVendor advisory
  43. 2026-08-20 23:22 UTCGHSA enrichment
  44. 2026-08-20 22:55 UTCEPSS rescore
  45. 2026-08-19 22:55 UTCEG score recompute
  46. 2026-08-19 22:55 UTCVendor advisory
  47. 2026-08-19 22:55 UTCGHSA enrichment
  48. 2026-08-19 17:04 UTCEPSS rescore
  49. 2026-08-18 19:40 UTCEG score recompute
  50. 2026-08-18 19:40 UTCVendor advisory
  51. 2026-08-18 19:40 UTCGHSA enrichment
  52. 2026-08-18 13:48 UTCEPSS rescore
  53. 2026-08-17 17:34 UTCVendor advisory
  54. 2026-08-17 17:34 UTCGHSA enrichment
  55. 2026-08-16 16:54 UTCEG score recompute
  56. 2026-08-16 16:54 UTCVendor advisory
  57. 2026-08-16 16:54 UTCGHSA enrichment
  58. 2026-08-16 14:56 UTCEPSS rescore
  59. 2026-08-15 16:29 UTCEG score recompute
  60. 2026-08-15 16:29 UTCVendor advisory
  61. 2026-08-15 16:29 UTCGHSA enrichment
  62. 2026-08-15 01:30 UTCEPSS rescore
  63. 2026-08-14 16:02 UTCVendor advisory
  64. 2026-08-14 16:02 UTCGHSA enrichment
  65. 2026-08-13 15:36 UTCEG score recompute▲ 5.50
  66. 2026-08-13 15:36 UTCVendor advisory
  67. 2026-08-13 15:36 UTCGHSA enrichment
  68. 2026-08-13 15:36 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  69. 2026-08-12 13:51 UTCEPSS rescore
  70. 2026-08-11 19:38 UTCVendor advisory
  71. 2026-08-11 19:38 UTCGHSA enrichment
  72. 2026-08-11 00:00 UTCEPSS rescore
  73. 2026-08-09 13:47 UTCEPSS rescore
  74. 2026-08-08 18:31 UTCVendor advisory
  75. 2026-08-08 18:31 UTCGHSA enrichment

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-64166?
CVE-2026-64166 is a medium vulnerability published on July 19, 2026. In the Linux kernel, the following vulnerability has been resolved: firmware: arm_ffa: Check for NULL FF-A ID table while driver registration The bus match callback assumes that every FF-A driver provides an id_table and dereferences it unconditionally. Enforce that contract at registration time so…
When was CVE-2026-64166 disclosed?
CVE-2026-64166 was first published in the National Vulnerability Database on July 19, 2026, with the most recent update on August 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64166 actively exploited?
CVE-2026-64166 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 97.9% of all scored CVEs.
What is the CVSS score of CVE-2026-64166?
CVE-2026-64166 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-64166?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-64166, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-64166

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