fkie_cve-2024-38633
Vulnerability from fkie_nvd
Published
2024-06-21 11:15
Modified
2024-11-21 09:26
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: serial: max3100: Update uart_driver_registered on driver removal The removal of the last MAX3100 device triggers the removal of the driver. However, code doesn't update the respective global variable and after insmod — rmmod — insmod cycle the kernel oopses: max3100 spi-PRP0001:01: max3100_probe: adding port 0 BUG: kernel NULL pointer dereference, address: 0000000000000408 ... RIP: 0010:serial_core_register_port+0xa0/0x840 ... max3100_probe+0x1b6/0x280 [max3100] spi_probe+0x8d/0xb0 Update the actual state so next time UART driver will be registered again. Hugo also noticed, that the error path in the probe also affected by having the variable set, and not cleared. Instead of clearing it move the assignment after the successfull uart_register_driver() call.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/21a61a7fbcfdd3493cede43ebc7c4dfae2147a8bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/361a92c9038e8c8c3996f8eeaa14522a8ad90752Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/712a1fcb38dc7cac6da63ee79a88708fbf9c45ecPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9db4222ed8cd3e50b81c8b910ae74c26427a4003Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b6eb7aff23e05f362e8c9b560f6ac5e727b70e00Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e8a10089eddba40d4b2080c9d3fc2d2b2488f762Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e8e2a4339decad7e59425b594a98613402652d72Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fa84ca78b048dfb00df0ef446f5c35e0a98ca6a0Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/21a61a7fbcfdd3493cede43ebc7c4dfae2147a8bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/361a92c9038e8c8c3996f8eeaa14522a8ad90752Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/712a1fcb38dc7cac6da63ee79a88708fbf9c45ecPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/9db4222ed8cd3e50b81c8b910ae74c26427a4003Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b6eb7aff23e05f362e8c9b560f6ac5e727b70e00Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e8a10089eddba40d4b2080c9d3fc2d2b2488f762Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/e8e2a4339decad7e59425b594a98613402652d72Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/fa84ca78b048dfb00df0ef446f5c35e0a98ca6a0Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: max3100: Update uart_driver_registered on driver removal\n\nThe removal of the last MAX3100 device triggers the removal of\nthe driver. However, code doesn\u0027t update the respective global\nvariable and after insmod \u2014 rmmod \u2014 insmod cycle the kernel\noopses:\n\n  max3100 spi-PRP0001:01: max3100_probe: adding port 0\n  BUG: kernel NULL pointer dereference, address: 0000000000000408\n  ...\n  RIP: 0010:serial_core_register_port+0xa0/0x840\n  ...\n   max3100_probe+0x1b6/0x280 [max3100]\n   spi_probe+0x8d/0xb0\n\nUpdate the actual state so next time UART driver will be registered\nagain.\n\nHugo also noticed, that the error path in the probe also affected\nby having the variable set, and not cleared. Instead of clearing it\nmove the assignment after the successfull uart_register_driver() call."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: serial: max3100: actualizaci\u00f3n uart_driver_registered al eliminar el controlador La eliminaci\u00f3n del \u00faltimo dispositivo MAX3100 desencadena la eliminaci\u00f3n del controlador. Sin embargo, el c\u00f3digo no actualiza la variable global respectiva y despu\u00e9s del ciclo insmod \u2014 rmmod \u2014 insmod, el kernel falla: max3100 spi-PRP0001:01: max3100_probe: agregando el puerto 0 ERROR: desreferencia del puntero NULL del kernel, direcci\u00f3n: 0000000000000408... RIP: 0010:serial_core_register_port+0xa0/0x840 ... max3100_probe+0x1b6/0x280 [max3100] spi_probe+0x8d/0xb0 Actualice el estado actual para que la pr\u00f3xima vez el controlador UART se registre nuevamente. Hugo tambi\u00e9n not\u00f3 que la ruta de error en la sonda tambi\u00e9n se ve\u00eda afectada por tener la variable configurada y no borrada. En lugar de borrarlo, mueva la asignaci\u00f3n despu\u00e9s de la llamada exitosa a uart_register_driver()."
    }
  ],
  "id": "CVE-2024-38633",
  "lastModified": "2024-11-21T09:26:32.337",
  "metrics": {
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2024-06-21T11:15:12.053",
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}


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