FKIE_CVE-2025-68806

Vulnerability from fkie_nvd - Published: 2026-01-13 16:16 - Updated: 2026-04-15 00:35
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix buffer validation by including null terminator size in EA length The smb2_set_ea function, which handles Extended Attributes (EA), was performing buffer validation checks that incorrectly omitted the size of the null terminating character (+1 byte) for EA Name. This patch fixes the issue by explicitly adding '+ 1' to EaNameLength where the null terminator is expected to be present in the buffer, ensuring the validation accurately reflects the total required buffer size.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/95d7a890e4b03e198836d49d699408fd1867cb55
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a28a375a5439eb474e9f284509a407efb479c925
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cae52c592a07e1d3fa3338a5f064a374a5f26750
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d26af6d14da43ab92d07bc60437c62901dc522e6
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix buffer validation by including null terminator size in EA length\n\nThe smb2_set_ea function, which handles Extended Attributes (EA),\nwas performing buffer validation checks that incorrectly omitted the size\nof the null terminating character (+1 byte) for EA Name.\nThis patch fixes the issue by explicitly adding \u0027+ 1\u0027 to EaNameLength where\nthe null terminator is expected to be present in the buffer, ensuring\nthe validation accurately reflects the total required buffer size."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nksmbd: corrige la validaci\u00f3n del b\u00fafer al incluir el tama\u00f1o del terminador nulo en la longitud de EA\n\nLa funci\u00f3n smb2_set_ea, que maneja los Atributos Extendidos (EA),\nestaba realizando comprobaciones de validaci\u00f3n del b\u00fafer que omit\u00edan incorrectamente el tama\u00f1o\ndel car\u00e1cter de terminaci\u00f3n nula (+1 byte) para el Nombre de EA.\nEste parche corrige el problema al a\u00f1adir expl\u00edcitamente \u0027+ 1\u0027 a EaNameLength donde\nse espera que el terminador nulo est\u00e9 presente en el b\u00fafer, asegurando\nque la validaci\u00f3n refleje con precisi\u00f3n el tama\u00f1o total de b\u00fafer requerido."
    }
  ],
  "id": "CVE-2025-68806",
  "lastModified": "2026-04-15T00:35:42.020",
  "metrics": {},
  "published": "2026-01-13T16:16:02.747",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6dc8cf6e7998ef7aeb9383a4c2904ea5d22fa2e4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/95d7a890e4b03e198836d49d699408fd1867cb55"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a28a375a5439eb474e9f284509a407efb479c925"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cae52c592a07e1d3fa3338a5f064a374a5f26750"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d26af6d14da43ab92d07bc60437c62901dc522e6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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