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(16)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-gcp-edge (5.15.0.1112.122~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.66~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-oracle-7.0 (7.0.0-1008.8) @ resolute2026-08-30ubuntu
ubuntulinux-xilinx-zynqmp-tools-5.15.0-1075 (5.15.0-1075.79) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-lowlatency-5.15 (5.15.0.1107.107) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-tegra-rt-5.15 (5.15.0.1064.64) @ jammy2026-08-30ubuntu
ubuntulinux-tools-azure-fde-7.0 (7.0.0-1009.9) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oracle-lts-22.04 (5.15.0.1109.105) @ jammy2026-08-30ubuntu
ubuntulinux-tools-azure-fde-lts-22.04 (5.15.0.1117.126) @ jammy2026-08-30ubuntu
ubuntulinux-tools-raspi-realtime-7.0 (7.0.0-1015.15) @ resolute2026-08-30ubuntu
ubuntulinux-tools-oracle-edge (5.15.0.1109.115~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-azure-fips-5.15 (5.15.0.1117.102) @ jammy2026-08-30ubuntu
ubuntulinux-tools-intel-iotg-edge (5.15.0.1107.113~20.04.1) @ focal2026-08-30ubuntu
ubuntulinux-tools-intel-iotg-5.15 (5.15.0.1107.106) @ jammy2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-24.04-edge (7.0.0-1016.16~24.04.1) @ noble2026-08-30ubuntu
ubuntulinux-tools-nvidia-hwe-26.04 (7.0.0-2016.16) @ resolute2026-08-30ubuntu

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 (138 versions)7.0.12-1—

Weakness Classification(1)

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

All Vendor Advisories

(16)

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 20× in last 7d / 73× 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 106 total refreshes for this CVE.

  1. 2026-08-30 02:44 UTCEG score recompute
  2. 2026-08-30 02:44 UTCVendor advisory
  3. 2026-08-30 02:44 UTCGHSA enrichment
  4. 2026-08-28 21:42 UTCEPSS rescore
  5. 2026-08-28 02:27 UTCEG score recompute
  6. 2026-08-28 02:27 UTCVendor advisory
  7. 2026-08-28 02:27 UTCGHSA enrichment
  8. 2026-08-27 02:00 UTCEG score recompute
  9. 2026-08-27 02:00 UTCVendor advisory
  10. 2026-08-27 02:00 UTCGHSA enrichment
  11. 2026-08-26 14:46 UTCEPSS rescore
  12. 2026-08-26 01:34 UTCEG score recompute
  13. 2026-08-26 01:34 UTCVendor advisory
  14. 2026-08-26 01:33 UTCGHSA enrichment
  15. 2026-08-25 13:49 UTCEPSS rescore
  16. 2026-08-25 01:08 UTCEG score recompute
  17. 2026-08-25 01:08 UTCVendor advisory
  18. 2026-08-25 01:07 UTCGHSA enrichment
  19. 2026-08-24 00:41 UTCVendor advisory
  20. 2026-08-24 00:41 UTCGHSA enrichment
  21. 2026-08-23 00:14 UTCEG score recompute
  22. 2026-08-23 00:14 UTCVendor advisory
  23. 2026-08-23 00:14 UTCGHSA enrichment
  24. 2026-08-21 23:49 UTCEPSS rescore
  25. 2026-08-21 23:48 UTCVendor advisory
Show 75 more
  1. 2026-08-21 23:48 UTCGHSA enrichment
  2. 2026-08-20 23:22 UTCEG score recompute
  3. 2026-08-20 23:22 UTCVendor advisory
  4. 2026-08-20 23:22 UTCGHSA enrichment
  5. 2026-08-20 22:55 UTCEPSS rescore
  6. 2026-08-19 22:55 UTCEG score recompute
  7. 2026-08-19 22:55 UTCVendor advisory
  8. 2026-08-19 22:55 UTCGHSA enrichment
  9. 2026-08-19 17:04 UTCEPSS rescore
  10. 2026-08-18 19:40 UTCEG score recompute
  11. 2026-08-18 19:40 UTCVendor advisory
  12. 2026-08-18 19:40 UTCGHSA enrichment
  13. 2026-08-18 13:48 UTCEPSS rescore
  14. 2026-08-17 17:34 UTCVendor advisory
  15. 2026-08-17 17:34 UTCGHSA enrichment
  16. 2026-08-16 16:54 UTCEG score recompute
  17. 2026-08-16 16:54 UTCVendor advisory
  18. 2026-08-16 16:54 UTCGHSA enrichment
  19. 2026-08-16 14:56 UTCEPSS rescore
  20. 2026-08-15 16:29 UTCEG score recompute
  21. 2026-08-15 16:29 UTCVendor advisory
  22. 2026-08-15 16:29 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-14 16:02 UTCVendor advisory
  25. 2026-08-14 16:02 UTCGHSA enrichment
  26. 2026-08-13 15:36 UTCEG score recompute▲ 5.50
  27. 2026-08-13 15:36 UTCVendor advisory
  28. 2026-08-13 15:36 UTCGHSA enrichment
  29. 2026-08-13 15:36 UTCNVD updateCVSS v3 → 5.5 · severity → MEDIUM
  30. 2026-08-12 13:51 UTCEPSS rescore
  31. 2026-08-11 19:38 UTCVendor advisory
  32. 2026-08-11 19:38 UTCGHSA enrichment
  33. 2026-08-11 00:00 UTCEPSS rescore
  34. 2026-08-09 13:47 UTCEPSS rescore
  35. 2026-08-08 18:31 UTCVendor advisory
  36. 2026-08-08 18:31 UTCGHSA enrichment
  37. 2026-08-06 13:47 UTCEPSS rescore
  38. 2026-08-05 19:17 UTCEPSS rescore
  39. 2026-08-05 19:17 UTCEPSS rescore
  40. 2026-08-05 17:26 UTCVendor advisory
  41. 2026-08-05 17:26 UTCGHSA enrichment
  42. 2026-08-04 15:10 UTCEPSS rescore
  43. 2026-08-04 10:39 UTCEPSS rescore
  44. 2026-08-03 10:36 UTCEPSS rescore
  45. 2026-08-02 16:23 UTCVendor advisory
  46. 2026-08-02 16:23 UTCGHSA enrichment
  47. 2026-08-02 02:27 UTCEPSS rescore
  48. 2026-08-01 04:16 UTCEPSS rescore
  49. 2026-07-30 16:28 UTCEPSS rescore
  50. 2026-07-30 15:18 UTCEG score recompute
  51. 2026-07-30 15:18 UTCVendor advisory
  52. 2026-07-30 15:18 UTCGHSA enrichment
  53. 2026-07-30 01:30 UTCEPSS rescore
  54. 2026-07-30 01:30 UTCEPSS rescore
  55. 2026-07-29 11:56 UTCGHSA enrichment
  56. 2026-07-28 15:37 UTCEPSS rescore
  57. 2026-07-27 14:14 UTCEPSS rescore
  58. 2026-07-26 14:54 UTCEPSS rescore
  59. 2026-07-26 14:54 UTCEPSS rescore
  60. 2026-07-26 10:51 UTCEG score recompute
  61. 2026-07-26 10:51 UTCVendor advisory
  62. 2026-07-26 10:51 UTCGHSA enrichment
  63. 2026-07-25 14:18 UTCEPSS rescore
  64. 2026-07-25 14:18 UTCEPSS rescore
  65. 2026-07-24 14:18 UTCEPSS rescore
  66. 2026-07-24 14:18 UTCEPSS rescore
  67. 2026-07-23 14:18 UTCEPSS rescore
  68. 2026-07-23 14:18 UTCEPSS rescore
  69. 2026-07-23 03:22 UTCEG score recompute
  70. 2026-07-22 14:08 UTCEPSS rescore
  71. 2026-07-22 14:08 UTCEPSS rescore
  72. 2026-07-21 15:25 UTCEPSS rescore
  73. 2026-07-21 15:25 UTCEPSS rescore
  74. 2026-07-20 17:16 UTCEG score recompute
  75. 2026-07-20 17:16 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 98.0% 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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