fkie_cve-2025-38416
Vulnerability from fkie_nvd
Published
2025-07-25 14:15
Modified
2025-07-25 15:29
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: NFC: nci: uart: Set tty->disc_data only in success path Setting tty->disc_data before opening the NCI device means we need to clean it up on error paths. This also opens some short window if device starts sending data, even before NCIUARTSETDRIVER IOCTL succeeded (broken hardware?). Close the window by exposing tty->disc_data only on the success path, when opening of the NCI device and try_module_get() succeeds. The code differs in error path in one aspect: tty->disc_data won't be ever assigned thus NULL-ified. This however should not be relevant difference, because of "tty->disc_data=NULL" in nci_uart_tty_open().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/000bfbc6bc334a93fffca8f5aa9583e7b6356cb5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/55c3dbd8389636161090a2b2b6d2d709b9602e9c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a514fca2b8e95838a3ba600f31a18fa60b76d893
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a8acc7080ad55c5402a1b818b3008998247dda87
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ac6992f72bd8e22679c1e147ac214de6a7093c23
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc7722619a9c307e9938d735cf4a2210d3d48dcb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e9799db771b2d574d5bf0dfb3177485e5f40d4d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc27ab48904ceb7e4792f0c400f1ef175edf16fe
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: nci: uart: Set tty-\u003edisc_data only in success path\n\nSetting tty-\u003edisc_data before opening the NCI device means we need to\nclean it up on error paths.  This also opens some short window if device\nstarts sending data, even before NCIUARTSETDRIVER IOCTL succeeded\n(broken hardware?).  Close the window by exposing tty-\u003edisc_data only on\nthe success path, when opening of the NCI device and try_module_get()\nsucceeds.\n\nThe code differs in error path in one aspect: tty-\u003edisc_data won\u0027t be\never assigned thus NULL-ified.  This however should not be relevant\ndifference, because of \"tty-\u003edisc_data=NULL\" in nci_uart_tty_open()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFC: nci: uart: Establecer tty-\u0026gt;disc_data solo en la ruta correcta. Configurar tty-\u0026gt;disc_data antes de abrir el dispositivo NCI implica la necesidad de eliminar las rutas de error. Esto tambi\u00e9n genera una peque\u00f1a ventana de tiempo si el dispositivo comienza a enviar datos, incluso antes de que NCIUARTSETDRIVER IOCTL se haya ejecutado correctamente (\u00bfhardware da\u00f1ado?). Esta ventana se cierra exponiendo tty-\u0026gt;disc_data solo en la ruta correcta cuando se abre el dispositivo NCI y try_module_get() se ejecuta correctamente. El c\u00f3digo difiere en la ruta de error en un aspecto: tty-\u0026gt;disc_data nunca se asignar\u00e1, por lo que se convierte en NULL. Sin embargo, esta diferencia no deber\u00eda ser relevante, debido a \"tty-\u0026gt;disc_data=NULL\" en nci_uart_tty_open()."
    }
  ],
  "id": "CVE-2025-38416",
  "lastModified": "2025-07-25T15:29:19.837",
  "metrics": {},
  "published": "2025-07-25T14:15:33.373",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/000bfbc6bc334a93fffca8f5aa9583e7b6356cb5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/55c3dbd8389636161090a2b2b6d2d709b9602e9c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a514fca2b8e95838a3ba600f31a18fa60b76d893"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a8acc7080ad55c5402a1b818b3008998247dda87"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ac6992f72bd8e22679c1e147ac214de6a7093c23"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dc7722619a9c307e9938d735cf4a2210d3d48dcb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e9799db771b2d574d5bf0dfb3177485e5f40d4d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc27ab48904ceb7e4792f0c400f1ef175edf16fe"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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