« Volver al listado

CVE-2026-72416

Estado: RecibidaAlta (7.3)—

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_compat: ebtables emulation must reject non-bridge targets

xtables targets return netfilter verdicts: NF_ACCEPT, NF_DROP, and so on. ebtables targets return incompatible verdicts: EBT_ACCEPT, EBT_DROP, ... We cannot allow fallback to NFPROTO_UNSPEC.

ebtables doesn't permit this since 11ff7288beb2 ("netfilter: ebtables: reject non-bridge targets") but that commit missed the nft_compat layer.

CVSS

Probabilidad de explotación (EPSS)

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso local (AV:L) sin interacción (UI:N) con privilegios (PR:L) en Linux kernel. El fallo permite eludir validaciones de verdicts incompatibles en netfilter/ebtables, escalando a negación de servicio o corrupción de tráfico de red.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

Tecnologías afectadas (1)

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

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-72416",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": "0ca743a5599199152a31a7146b83213c786c2eb2",
              "lessThan": "efc17b9240d821c424bc5191a5c6e9384a06293e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0ca743a5599199152a31a7146b83213c786c2eb2",
              "lessThan": "b3f7a84540a0d014ec42343ff5909657c1bd1994",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0ca743a5599199152a31a7146b83213c786c2eb2",
              "lessThan": "33e1875d6b5b552a2e5652b40074c604199354ee",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0ca743a5599199152a31a7146b83213c786c2eb2",
              "lessThan": "c129b0185e707dce405968e21afccd5728b2ce63",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0ca743a5599199152a31a7146b83213c786c2eb2",
              "lessThan": "9dbba7e694ec045f21ede2f892fb42b81b4e1692",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/netfilter/nft_compat.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/netfilter/nft_compat.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:15.223",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/33e1875d6b5b552a2e5652b40074c604199354ee",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9dbba7e694ec045f21ede2f892fb42b81b4e1692",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b3f7a84540a0d014ec42343ff5909657c1bd1994",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c129b0185e707dce405968e21afccd5728b2ce63",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/efc17b9240d821c424bc5191a5c6e9384a06293e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_compat: ebtables emulation must reject non-bridge targets\n\nxtables targets return netfilter verdicts: NF_ACCEPT, NF_DROP, and so\non.  ebtables targets return incompatible verdicts: EBT_ACCEPT,\nEBT_DROP, ...   We cannot allow fallback to NFPROTO_UNSPEC.\n\nebtables doesn't permit this since\n11ff7288beb2 (\"netfilter: ebtables: reject non-bridge targets\")\nbut that commit missed the nft_compat layer."
    }
  ],
  "lastModified": "2026-08-17T06:19:08.480",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}