CVE-2025-22084 (GCVE-0-2025-22084)
Vulnerability from cvelistv5
Published
2025-04-16 14:12
Modified
2025-05-26 05:18
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: w1: fix NULL pointer dereference in probe The w1_uart_probe() function calls w1_uart_serdev_open() (which includes devm_serdev_device_open()) before setting the client ops via serdev_device_set_client_ops(). This ordering can trigger a NULL pointer dereference in the serdev controller's receive_buf handler, as it assumes serdev->ops is valid when SERPORT_ACTIVE is set. This is similar to the issue fixed in commit 5e700b384ec1 ("platform/chrome: cros_ec_uart: properly fix race condition") where devm_serdev_device_open() was called before fully initializing the device. Fix the race by ensuring client ops are set before enabling the port via w1_uart_serdev_open().
References
Impacted products
Vendor Product Version
Linux Linux Version: a3c08804364e80328a9ffdac59bb26676b938195
Version: a3c08804364e80328a9ffdac59bb26676b938195
Version: a3c08804364e80328a9ffdac59bb26676b938195
Version: a3c08804364e80328a9ffdac59bb26676b938195
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{
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/w1/masters/w1-uart.c"
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nw1: fix NULL pointer dereference in probe\n\nThe w1_uart_probe() function calls w1_uart_serdev_open() (which includes\ndevm_serdev_device_open()) before setting the client ops via\nserdev_device_set_client_ops(). This ordering can trigger a NULL pointer\ndereference in the serdev controller\u0027s receive_buf handler, as it assumes\nserdev-\u003eops is valid when SERPORT_ACTIVE is set.\n\nThis is similar to the issue fixed in commit 5e700b384ec1\n(\"platform/chrome: cros_ec_uart: properly fix race condition\") where\ndevm_serdev_device_open() was called before fully initializing the\ndevice.\n\nFix the race by ensuring client ops are set before enabling the port via\nw1_uart_serdev_open()."
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      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:18:08.278Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/0dd6770a72f138dabea9eae87f3da6ffa68f0d06"
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      ],
      "title": "w1: fix NULL pointer dereference in probe",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-22084",
    "datePublished": "2025-04-16T14:12:32.950Z",
    "dateReserved": "2024-12-29T08:45:45.816Z",
    "dateUpdated": "2025-05-26T05:18:08.278Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-22084\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-04-16T15:16:02.607\",\"lastModified\":\"2025-04-17T20:22:16.240\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nw1: fix NULL pointer dereference in probe\\n\\nThe w1_uart_probe() function calls w1_uart_serdev_open() (which includes\\ndevm_serdev_device_open()) before setting the client ops via\\nserdev_device_set_client_ops(). This ordering can trigger a NULL pointer\\ndereference in the serdev controller\u0027s receive_buf handler, as it assumes\\nserdev-\u003eops is valid when SERPORT_ACTIVE is set.\\n\\nThis is similar to the issue fixed in commit 5e700b384ec1\\n(\\\"platform/chrome: cros_ec_uart: properly fix race condition\\\") where\\ndevm_serdev_device_open() was called before fully initializing the\\ndevice.\\n\\nFix the race by ensuring client ops are set before enabling the port via\\nw1_uart_serdev_open().\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: w1: correcci\u00f3n de la desreferencia de puntero nulo en la sonda. La funci\u00f3n w1_uart_probe() llama a w1_uart_serdev_open() (que incluye devm_serdev_device_open()) antes de configurar las operaciones del cliente mediante serdev_device_set_client_ops(). Este orden puede desencadenar una desreferencia de puntero nulo en el controlador receive_buf del controlador serdev, ya que asume que serdev-\u0026gt;ops es v\u00e1lido cuando SERPORT_ACTIVE est\u00e1 configurado. Esto es similar al problema corregido en el commit 5e700b384ec1 (\\\"platform/chrome: cros_ec_uart: corregir correctamente la condici\u00f3n de ejecuci\u00f3n\\\") donde se llam\u00f3 a devm_serdev_device_open() antes de inicializar completamente el dispositivo. Corrija la ejecuci\u00f3n asegur\u00e1ndose de que las operaciones del cliente est\u00e9n configuradas antes de habilitar el puerto mediante w1_uart_serdev_open().\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0dd6770a72f138dabea9eae87f3da6ffa68f0d06\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/4f750b84628080ff0d67bf1af67a4967b740acf2\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/64ab50577c59bb7049bec6b5c42d1c38e4029f29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cc6b0ec7cccbf66ef3621e9e93296b7bd1f52298\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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