{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64227",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.771Z",
        "datePublished": "2026-07-24T15:23:10.936Z",
        "dateUpdated": "2026-07-27T04:37:25.776Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-07-27T04:37:25.776Z"
            },
            "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't\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device's 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's ACPI companion is not present to -ENODEV for consistency\nwith the other drivers."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "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"
                    ],
                    "versions": [
                        {
                            "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
                            "lessThan": "a9451bf561232314755baf69a5916e0ac77f33fc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
                            "lessThan": "34f4d0e4e5065237d15651df759a99e81b7f9f51",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
                            "lessThan": "612ddab8fce04394bd7aebe8e0f2599642e30859",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5829046825ac89fffc60f2670bc564fda2c0155a",
                            "lessThan": "e4865a56d013e86e46ea6acea15bb6eae01898ff",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "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"
                    ],
                    "versions": [
                        {
                            "version": "6.7",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.7",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.0.11",
                            "lessThanOrEqual": "7.0.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "6.18.40"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.0.11"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.7",
                                    "versionEndExcluding": "7.1"
                                }
                            ]
                        }
                    ]
                }
            ],
            "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"
            }
        }
    }
}