{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-23237",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-13T15:37:45.988Z",
        "datePublished": "2026-03-04T14:38:41.815Z",
        "dateUpdated": "2026-05-11T22:02:58.604Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-11T22:02:58.604Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: classmate-laptop: Add missing NULL pointer checks\n\nIn a few places in the Classmate laptop driver, code using the accel\nobject may run before that object's address is stored in the driver\ndata of the input device using it.\n\nFor example, cmpc_accel_sensitivity_store_v4() is the \"show\" method\nof cmpc_accel_sensitivity_attr_v4 which is added in cmpc_accel_add_v4(),\nbefore calling dev_set_drvdata() for inputdev->dev.  If the sysfs\nattribute is accessed prematurely, the dev_get_drvdata(&inputdev->dev)\ncall in in cmpc_accel_sensitivity_store_v4() returns NULL which\nleads to a NULL pointer dereference going forward.\n\nMoreover, sysfs attributes using the input device are added before\ninitializing that device by cmpc_add_acpi_notify_device() and if one\nof them is accessed before running that function, a NULL pointer\ndereference will occur.\n\nFor example, cmpc_accel_sensitivity_attr_v4 is added before calling\ncmpc_add_acpi_notify_device() and if it is read prematurely, the\ndev_get_drvdata(&acpi->dev) call in cmpc_accel_sensitivity_show_v4()\nreturns NULL which leads to a NULL pointer dereference going forward.\n\nFix this by adding NULL pointer checks in all of the relevant places."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/platform/x86/classmate-laptop.c"
                    ],
                    "versions": [
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "993708fc18d0d0919db438361b4e8c1f980a8d1b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "af673209d43b46257540997aba042b90ef3258c0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "eb214804f03c829decf10998e9b7dd26f4c8ab9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "9cf4b9b8ad09d6e05307abc4e951cabdff4be652",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "da6e06a5fdbabea3870d18c227734b5dea5b3be6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "97528b1622b8f129574d29a571c32a3c85eafa3c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "529aa8cb0a59367d08883f818e8c47028e819d0d",
                            "lessThan": "fe747d7112283f47169e9c16e751179a9b38611e",
                            "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/platform/x86/classmate-laptop.c"
                    ],
                    "versions": [
                        {
                            "version": "2.6.33",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "2.6.33",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.251",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.201",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.164",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.127",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.74",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.13",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "2.6.33",
                                    "versionEndExcluding": "5.10.251"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                    "versionEndExcluding": "5.15.201"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.33",
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                                },
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.33",
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                                    "versionStartIncluding": "2.6.33",
                                    "versionEndExcluding": "6.18.13"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "2.6.33",
                                    "versionEndExcluding": "6.19"
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/993708fc18d0d0919db438361b4e8c1f980a8d1b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/af673209d43b46257540997aba042b90ef3258c0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/eb214804f03c829decf10998e9b7dd26f4c8ab9e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/9cf4b9b8ad09d6e05307abc4e951cabdff4be652"
                },
                {
                    "url": "https://git.kernel.org/stable/c/da6e06a5fdbabea3870d18c227734b5dea5b3be6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/97528b1622b8f129574d29a571c32a3c85eafa3c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fe747d7112283f47169e9c16e751179a9b38611e"
                }
            ],
            "title": "platform/x86: classmate-laptop: Add missing NULL pointer checks",
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}