FKIE_CVE-2026-64227

Vulnerability from fkie_nvd - Published: 2026-07-24 16:16 - Updated: 2026-11-06 17:18
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: 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/34f4d0e4e5065237d15651df759a99e81b7f9f51Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/612ddab8fce04394bd7aebe8e0f2599642e30859Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9451bf561232314755baf69a5916e0ac77f33fcPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e4865a56d013e86e46ea6acea15bb6eae01898ffPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 7.1
linux linux_kernel 7.1
linux linux_kernel 7.1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "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"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "05880CF6-5AD2-44E9-853A-6CE8318E76A5",
              "versionEndExcluding": "6.12.97",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "67D87928-1419-4529-9201-42C059678CB4",
              "versionEndExcluding": "6.18.40",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0520D091-FC52-4A50-AF07-70AE7D08B750",
              "versionEndExcluding": "7.0.11",
              "versionStartIncluding": "6.19",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*",
              "matchCriteriaId": "0D38F0BF-A728-4133-A358-D44A2F7EE6D6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "EC732D08-5F7B-46D9-B154-E60C7F4F0A97",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-64227",
  "lastModified": "2026-11-06T17:18:42.640",
  "metrics": {
    "cvssMetricV31": [
      {
        "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",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-64227",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-11-06T16:32:33.166548Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-24T16:16:51.793",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/34f4d0e4e5065237d15651df759a99e81b7f9f51"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/612ddab8fce04394bd7aebe8e0f2599642e30859"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/a9451bf561232314755baf69a5916e0ac77f33fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/e4865a56d013e86e46ea6acea15bb6eae01898ff"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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