fkie_cve-2025-38483
Vulnerability from fkie_nvd
Published
2025-07-28 12:15
Modified
2025-11-03 18:16
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/076b13ee60eb01ed0d140ef261f95534562a3077
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/539bdff832adac9ea653859fa0b6bc62e743329c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/65c03e6fc524eb2868abedffd8a4613d78abc288
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/adb7df8a8f9d788423e161b779764527dd3ec2d0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b3c95fa508e5dc3da60520eea92a5241095ceef1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d1291c69f46d6572b2cf75960dd8975d7ab2176b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed93c6f68a3be06e4e0c331c6e751f462dee3932
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f211572818ed5bec2b3f5d4e0719ef8699b3c269
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Impacted products
Vendor Product Version


To clipboard 

{
  "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."
    }
  ],
  "id": "CVE-2025-38483",
  "lastModified": "2025-11-03T18:16:24.883",
  "metrics": {},
  "published": "2025-07-28T12:15:30.253",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/076b13ee60eb01ed0d140ef261f95534562a3077"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/539bdff832adac9ea653859fa0b6bc62e743329c"
    },
    {
      "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/b3c95fa508e5dc3da60520eea92a5241095ceef1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d1291c69f46d6572b2cf75960dd8975d7ab2176b"
    },
    {
      "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": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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