CVE-2025-38481

{"id": "CVE-2025-38481", "cveTags": [], "metrics": {}, "published": "2025-07-28T12:15:29.980", "references": [{"url": "https://git.kernel.org/stable/c/08ae4b20f5e82101d77326ecab9089e110f224cc", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/992d600f284e719242a434166e86c1999649b71c", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/c9d3d9667443caafa804cd07940aeaef8e53aa90", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d4c73ce13f5b5a0fe0319f1f352ff602f0ace8e3", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/e3b8322cc8081d142ee4c1a43e1d702bdba1ed76", "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Awaiting Analysis", "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncomedi: Fail COMEDI_INSNLIST ioctl if n_insns is too large\n\nThe handling of the `COMEDI_INSNLIST` ioctl allocates a kernel buffer to\nhold the array of `struct comedi_insn`, getting the length from the\n`n_insns` member of the `struct comedi_insnlist` supplied by the user.\nThe allocation will fail with a WARNING and a stack dump if it is too\nlarge.\n\nAvoid that by failing with an `-EINVAL` error if the supplied `n_insns`\nvalue is unreasonable.\n\nDefine the limit on the `n_insns` value in the `MAX_INSNS` macro. Set\nthis to the same value as `MAX_SAMPLES` (65536), which is the maximum\nallowed sum of the values of the member `n` in the array of `struct\ncomedi_insn`, and sensible comedi instructions will have an `n` of at\nleast 1."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: comedi: Error en el ioctl COMEDI_INSNLIST si n_insns es demasiado grande El manejo del ioctl `COMEDI_INSNLIST` asigna un b\u00fafer del kernel para contener la matriz de `struct comedi_insn`, obteniendo la longitud del miembro `n_insns` de la `struct comedi_insnlist` proporcionada por el usuario. La asignaci\u00f3n fallar\u00e1 con un WARNING y un volcado de pila si es demasiado grande. Ev\u00edtelo fallando con un error `-EINVAL` si el valor `n_insns` proporcionado no es razonable. Defina el l\u00edmite en el valor `n_insns` en la macro `MAX_INSNS`. Establezca esto en el mismo valor que `MAX_SAMPLES` (65536), que es la suma m\u00e1xima permitida de los valores del miembro `n` en la matriz de `struct comedi_insn`, y las instrucciones comedi sensatas tendr\u00e1n un `n` de al menos 1."}], "lastModified": "2025-07-29T14:14:29.590", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}