CVE-2026-98495

Estado: RecibidaSin puntuar—

Gravedad—Sin puntuar

Probabilidad de explotación0.21 %mayor que el 11 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoNo conocidosin código público localizado

En el kernel de Linux se ha resuelto la siguiente vulnerabilidad:

net: arp: terminar el nombre del dispositivo antes de la búsqueda

La ioctl de ARP copia una struct arpreq proporcionada por el usuario en un objeto de la pila. Su campo arp_dev puede contener IFNAMSIZ bytes sin un terminador NUL.

Dicha entrada se pasa a dev_get_by_name_rcu() o a __dev_get_by_name(), donde strcmp() puede leer más allá del final del objeto de la pila cuando existe un nombre de interfaz alternativo que coincida.

Terminar el campo antes de la búsqueda para evitar la lectura fuera de límites.

Traducción automática del texto original de NVD (en inglés).

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.21 %
Percentil entre todas las CVEs puntuadas: 11
Fecha de la puntuación: 20/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

Mostrar las 8 referencias

JSON original (NVD)

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{
  "id": "CVE-2026-98495",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "ae6d704dbf9542b0a0830ec91a2db4f30307e7d8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "47107491b48ceef0a2faa7a010cfa961f211ef9f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "7389757d88f54237951d7497d9c4dae7cc6d64be",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "414bbad9928598904313299ac9e037a73f520be1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "ba664d83638640cf454b65167339cbf20dfd6f10",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "35e716a70733472ede300540082d64c33bf3b4c9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
              "lessThan": "d8b6529e80bcb4fb8177121404cbb3377acaebd2",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/ipv4/arp.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.5",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/ipv4/arp.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:00.483",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/35e716a70733472ede300540082d64c33bf3b4c9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/414bbad9928598904313299ac9e037a73f520be1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/47107491b48ceef0a2faa7a010cfa961f211ef9f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7389757d88f54237951d7497d9c4dae7cc6d64be",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ae6d704dbf9542b0a0830ec91a2db4f30307e7d8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba664d83638640cf454b65167339cbf20dfd6f10",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d8b6529e80bcb4fb8177121404cbb3377acaebd2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arp: terminate device name before lookup\n\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes without a NUL terminator.\n\nSuch input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where\nstrcmp() can read past the end of the stack object when a matching\nalternative interface name exists.\n\nTerminate the field before the lookup to prevent the out-of-bounds read."
    }
  ],
  "lastModified": "2026-10-19T10:19:01.867",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}