{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-23237",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-23237"
  ],
  "published": "2026-03-04T14:38:44Z",
  "summary": "platform/x86: classmate-laptop: Add missing NULL pointer checks",
  "details": "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": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.164",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23237"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/993708fc18d0d0919db438361b4e8c1f980a8d1b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/af673209d43b46257540997aba042b90ef3258c0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eb214804f03c829decf10998e9b7dd26f4c8ab9e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9cf4b9b8ad09d6e05307abc4e951cabdff4be652"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/da6e06a5fdbabea3870d18c227734b5dea5b3be6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/97528b1622b8f129574d29a571c32a3c85eafa3c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/fe747d7112283f47169e9c16e751179a9b38611e"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}