CVE-2025-38483 (GCVE-0-2025-38483)
Vulnerability from cvelistv5
Published
2025-07-28 11:21
Modified
2025-07-28 11:21
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: comedi: das16m1: Fix bit shift out of bounds When checking for a supported IRQ number, the following test is used: /* only irqs 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, and 15 are valid */ if ((1 << it->options[1]) & 0xdcfc) { However, `it->options[i]` is an unchecked `int` value from userspace, so the shift amount could be negative or out of bounds. Fix the test by requiring `it->options[1]` to be within bounds before proceeding with the original test.
References
Impacted products
Vendor Product Version
Linux Linux Version: 729988507680b2ce934bce61d9ce0ea7b235914c
Version: 729988507680b2ce934bce61d9ce0ea7b235914c
Version: 729988507680b2ce934bce61d9ce0ea7b235914c
Version: 729988507680b2ce934bce61d9ce0ea7b235914c
Version: 729988507680b2ce934bce61d9ce0ea7b235914c
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/comedi/drivers/das16m1.c"
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: das16m1: Fix bit shift out of bounds\n\nWhen checking for a supported IRQ number, the following test is used:\n\n\t/* only irqs 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, and 15 are valid */\n\tif ((1 \u003c\u003c it-\u003eoptions[1]) \u0026 0xdcfc) {\n\nHowever, `it-\u003eoptions[i]` is an unchecked `int` value from userspace, so\nthe shift amount could be negative or out of bounds.  Fix the test by\nrequiring `it-\u003eoptions[1]` to be within bounds before proceeding with\nthe original test."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-07-28T11:21:47.895Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/65c03e6fc524eb2868abedffd8a4613d78abc288"
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          "url": "https://git.kernel.org/stable/c/adb7df8a8f9d788423e161b779764527dd3ec2d0"
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        {
          "url": "https://git.kernel.org/stable/c/076b13ee60eb01ed0d140ef261f95534562a3077"
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        {
          "url": "https://git.kernel.org/stable/c/f211572818ed5bec2b3f5d4e0719ef8699b3c269"
        },
        {
          "url": "https://git.kernel.org/stable/c/ed93c6f68a3be06e4e0c331c6e751f462dee3932"
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      ],
      "title": "comedi: das16m1: Fix bit shift out of bounds",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38483",
    "datePublished": "2025-07-28T11:21:47.895Z",
    "dateReserved": "2025-04-16T04:51:24.021Z",
    "dateUpdated": "2025-07-28T11:21:47.895Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-38483\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-07-28T12:15:30.253\",\"lastModified\":\"2025-07-29T14:14:29.590\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ncomedi: das16m1: Fix bit shift out of bounds\\n\\nWhen checking for a supported IRQ number, the following test is used:\\n\\n\\t/* only irqs 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, and 15 are valid */\\n\\tif ((1 \u003c\u003c it-\u003eoptions[1]) \u0026 0xdcfc) {\\n\\nHowever, `it-\u003eoptions[i]` is an unchecked `int` value from userspace, so\\nthe shift amount could be negative or out of bounds.  Fix the test by\\nrequiring `it-\u003eoptions[1]` to be within bounds before proceeding with\\nthe original test.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: das16m1: Corregir desplazamiento de bits fuera de los l\u00edmites Al comprobar un n\u00famero de IRQ compatible, se utiliza la siguiente prueba: /* solo las irq 2, 3, 4, 5, 6, 7, 10, 11, 12, 14 y 15 son v\u00e1lidas */ if ((1 \u0026lt;\u0026lt; it-\u0026gt;options[1]) \u0026amp; 0xdcfc) { Sin embargo, `it-\u0026gt;options[i]` es un valor `int` sin comprobar del espacio de usuario, por lo que la cantidad de desplazamiento podr\u00eda ser negativa o estar fuera de los l\u00edmites. Corrija la prueba exigiendo que `it-\u0026gt;options[1]` est\u00e9 dentro de los l\u00edmites antes de continuar con la prueba original.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/076b13ee60eb01ed0d140ef261f95534562a3077\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/65c03e6fc524eb2868abedffd8a4613d78abc288\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/adb7df8a8f9d788423e161b779764527dd3ec2d0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ed93c6f68a3be06e4e0c331c6e751f462dee3932\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f211572818ed5bec2b3f5d4e0719ef8699b3c269\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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