Vulnerability-Lookup

GHSA-PR66-3H83-6G86

Vulnerability from github – Published: 2026-07-24 18:31 – Updated: 2026-07-24 18:31

Details

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

ACPI: driver: Check ACPI_COMPANION() against NULL during probe

Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence.

Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices.

Also change the value returned by the ACPI thermal zone driver when the device's ACPI companion is not present to -ENODEV for consistency with the other drivers.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64227"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-24T16:16:51Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: driver: Check ACPI_COMPANION() against NULL during probe\n\nSince every platform driver can be forced to match a device that doesn\u0027t\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject should verify its presence.\n\nAccordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks\nagainst NULL to 13 platform drivers handling core ACPI devices.\n\nAlso change the value returned by the ACPI thermal zone driver when\nthe device\u0027s ACPI companion is not present to -ENODEV for consistency\nwith the other drivers.",
  "id": "GHSA-pr66-3h83-6g86",
  "modified": "2026-07-24T18:31:27Z",
  "published": "2026-07-24T18:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64227"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34f4d0e4e5065237d15651df759a99e81b7f9f51"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/612ddab8fce04394bd7aebe8e0f2599642e30859"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9451bf561232314755baf69a5916e0ac77f33fc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4865a56d013e86e46ea6acea15bb6eae01898ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f1e12d81f9cd250e722da01c7670b518d4181406"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-64227 (GCVE-0-2026-64227)

Vulnerability from cvelistv5 – Published: 2026-07-24 15:23 – Updated: 2026-07-27 04:37

Title

ACPI: driver: Check ACPI_COMPANION() against NULL during probe

Summary

In the Linux kernel, the following vulnerability has been resolved: ACPI: driver: Check ACPI_COMPANION() against NULL during probe Since every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), platform drivers that rely on the existence of a device's ACPI companion object should verify its presence. Accordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks against NULL to 13 platform drivers handling core ACPI devices. Also change the value returned by the ACPI thermal zone driver when the device's ACPI companion is not present to -ENODEV for consistency with the other drivers.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/a9451bf5612323147…
https://git.kernel.org/stable/c/34f4d0e4e5065237d…
https://git.kernel.org/stable/c/612ddab8fce04394b…
https://git.kernel.org/stable/c/e4865a56d013e86e4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5829046825ac89fffc60f2670bc564fda2c0155a , < a9451bf561232314755baf69a5916e0ac77f33fc (git) Affected: 5829046825ac89fffc60f2670bc564fda2c0155a , < 34f4d0e4e5065237d15651df759a99e81b7f9f51 (git) Affected: 5829046825ac89fffc60f2670bc564fda2c0155a , < 612ddab8fce04394bd7aebe8e0f2599642e30859 (git) Affected: 5829046825ac89fffc60f2670bc564fda2c0155a , < e4865a56d013e86e46ea6acea15bb6eae01898ff (git)
Linux	Linux	Affected: 6.7 Unaffected: 0 , < 6.7 (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/ac.c",
            "drivers/acpi/acpi_pad.c",
            "drivers/acpi/acpi_tad.c",
            "drivers/acpi/battery.c",
            "drivers/acpi/button.c",
            "drivers/acpi/ec.c",
            "drivers/acpi/hed.c",
            "drivers/acpi/nfit/core.c",
            "drivers/acpi/pfr_telemetry.c",
            "drivers/acpi/pfr_update.c",
            "drivers/acpi/sbs.c",
            "drivers/acpi/sbshc.c",
            "drivers/acpi/thermal.c",
            "drivers/acpi/tiny-power-button.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a9451bf561232314755baf69a5916e0ac77f33fc",
              "status": "affected",
              "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
              "versionType": "git"
            },
            {
              "lessThan": "34f4d0e4e5065237d15651df759a99e81b7f9f51",
              "status": "affected",
              "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
              "versionType": "git"
            },
            {
              "lessThan": "612ddab8fce04394bd7aebe8e0f2599642e30859",
              "status": "affected",
              "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
              "versionType": "git"
            },
            {
              "lessThan": "e4865a56d013e86e46ea6acea15bb6eae01898ff",
              "status": "affected",
              "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/acpi/ac.c",
            "drivers/acpi/acpi_pad.c",
            "drivers/acpi/acpi_tad.c",
            "drivers/acpi/battery.c",
            "drivers/acpi/button.c",
            "drivers/acpi/ec.c",
            "drivers/acpi/hed.c",
            "drivers/acpi/nfit/core.c",
            "drivers/acpi/pfr_telemetry.c",
            "drivers/acpi/pfr_update.c",
            "drivers/acpi/sbs.c",
            "drivers/acpi/sbshc.c",
            "drivers/acpi/thermal.c",
            "drivers/acpi/tiny-power-button.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "lessThan": "6.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.97",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.40",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.11",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.7",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: driver: Check ACPI_COMPANION() against NULL during probe\n\nSince every platform driver can be forced to match a device that doesn\u0027t\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device\u0027s ACPI companion\nobject should verify its presence.\n\nAccordingly, add requisite ACPI_COMPANION() or ACPI_HANDLE() checks\nagainst NULL to 13 platform drivers handling core ACPI devices.\n\nAlso change the value returned by the ACPI thermal zone driver when\nthe device\u0027s ACPI companion is not present to -ENODEV for consistency\nwith the other drivers."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-27T04:37:25.776Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a9451bf561232314755baf69a5916e0ac77f33fc"
        },
        {
          "url": "https://git.kernel.org/stable/c/34f4d0e4e5065237d15651df759a99e81b7f9f51"
        },
        {
          "url": "https://git.kernel.org/stable/c/612ddab8fce04394bd7aebe8e0f2599642e30859"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4865a56d013e86e46ea6acea15bb6eae01898ff"
        }
      ],
      "title": "ACPI: driver: Check ACPI_COMPANION() against NULL during probe",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64227",
    "datePublished": "2026-07-24T15:23:10.936Z",
    "dateReserved": "2026-07-19T15:36:31.771Z",
    "dateUpdated": "2026-07-27T04:37:25.776Z",
    "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.

Action not permitted

GHSA-PR66-3H83-6G86

CVE-2026-64227 (GCVE-0-2026-64227)

Tags

Sightings

Nomenclature