Vulnerability-Lookup

FKIE_CVE-2026-64166

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-08-13 15:31

Severity

5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

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.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0a5e695095c557d2380131b613dea4e8d90371be	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/198f6c86d508ed562f07dc00276cac6dbb5dd3bf	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/34f59211984f66788390e7469f3e99d3796db4a8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/820245d86ce58898fb48b4fefc77d0cafc02801d	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/adfff93d08a2e12ecf2a1eba272d18bc749f13c0	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/bc499d1acddbb75b5b4bce05f5296dd8ef9611fd	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f98f131256beaddd51ad468e95d90d857fef12bf	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.14
linux	linux_kernel	5.14
linux	linux_kernel	5.14
linux	linux_kernel	5.14
linux	linux_kernel	5.14
linux	linux_kernel	5.14
linux	linux_kernel	5.14
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Check for NULL FF-A ID table while driver registration\n\nThe bus match callback assumes that every FF-A driver provides an\nid_table and dereferences it unconditionally. Enforce that contract at\nregistration time so a buggy client driver cannot crash the bus during\nmatch."
    }
  ],
  "id": "CVE-2026-64166",
  "lastModified": "2026-08-13T15:31:32.930",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  "vulnStatus": "Analyzed",
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}

CVE-2026-64166 (GCVE-0-2026-64166)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40

Title

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

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

7 references

URL	Tags
https://git.kernel.org/stable/c/f98f131256beaddd5…
https://git.kernel.org/stable/c/bc499d1acddbb75b5…
https://git.kernel.org/stable/c/adfff93d08a2e12ec…
https://git.kernel.org/stable/c/34f59211984f66788…
https://git.kernel.org/stable/c/820245d86ce58898f…
https://git.kernel.org/stable/c/198f6c86d508ed562…
https://git.kernel.org/stable/c/0a5e695095c557d23…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < f98f131256beaddd51ad468e95d90d857fef12bf (git) Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < bc499d1acddbb75b5b4bce05f5296dd8ef9611fd (git) Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < adfff93d08a2e12ecf2a1eba272d18bc749f13c0 (git) Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < 34f59211984f66788390e7469f3e99d3796db4a8 (git) Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < 820245d86ce58898fb48b4fefc77d0cafc02801d (git) Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < 198f6c86d508ed562f07dc00276cac6dbb5dd3bf (git) Affected: 92743071464fca5acbbe812d9a0d88de3eaaad36 , < 0a5e695095c557d2380131b613dea4e8d90371be (git)
Linux	Linux	Affected: 5.14 Unaffected: 0 , < 5.14 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.142 , ≤ 6.6.* (semver) Unaffected: 6.12.92 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/firmware/arm_ffa/bus.c"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: arm_ffa: Check for NULL FF-A ID table while driver registration\n\nThe bus match callback assumes that every FF-A driver provides an\nid_table and dereferences it unconditionally. Enforce that contract at\nregistration time so a buggy client driver cannot crash the bus during\nmatch."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:40:51.305Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f98f131256beaddd51ad468e95d90d857fef12bf"
        },
        {
          "url": "https://git.kernel.org/stable/c/bc499d1acddbb75b5b4bce05f5296dd8ef9611fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/adfff93d08a2e12ecf2a1eba272d18bc749f13c0"
        },
        {
          "url": "https://git.kernel.org/stable/c/34f59211984f66788390e7469f3e99d3796db4a8"
        },
        {
          "url": "https://git.kernel.org/stable/c/820245d86ce58898fb48b4fefc77d0cafc02801d"
        },
        {
          "url": "https://git.kernel.org/stable/c/198f6c86d508ed562f07dc00276cac6dbb5dd3bf"
        },
        {
          "url": "https://git.kernel.org/stable/c/0a5e695095c557d2380131b613dea4e8d90371be"
        }
      ],
      "title": "firmware: arm_ffa: Check for NULL FF-A ID table while driver registration",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64166",
    "datePublished": "2026-07-19T15:40:51.305Z",
    "dateReserved": "2026-07-19T07:54:57.038Z",
    "dateUpdated": "2026-07-19T15:40:51.305Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

FKIE_CVE-2026-64166

CVE-2026-64166 (GCVE-0-2026-64166)

Tags

Sightings

Nomenclature