CVE-2026-64227 (GCVE-0-2026-64227)
Vulnerability from cvelistv5
Published
2026-07-24 15:23
Modified
2026-07-27 04:37
Severity ?
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
Impacted products
Vendor Product Version
Linux Linux Version: 5829046825ac89fffc60f2670bc564fda2c0155a
Version: 5829046825ac89fffc60f2670bc564fda2c0155a
Version: 5829046825ac89fffc60f2670bc564fda2c0155a
Version: 5829046825ac89fffc60f2670bc564fda2c0155a
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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"
}


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