CVE-2026-68472

Estado: RecibidaAlta (8.1)—

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

wifi: cfg80211: validate EHT MLE before MLD ID read

cfg80211_gen_new_ie() copies ML probe response elements from the parent frame when the parent EHT multi-link element has an MLD ID matching the nontransmitted BSSID index.

The code only checked that the extension element had more than one byte before calling ieee80211_mle_get_mld_id(). That helper assumes a BASIC MLE with enough common info and documents that callers must first use ieee80211_mle_type_ok().

Attack chain: malicious AP sends a short EHT MLE in an MBSSID beacon. cfg80211_inform_bss_frame_data() stores the copied IE buffer. cfg80211_parse_mbssid_data() builds the nontransmitted BSS IE. cfg80211_gen_new_ie() sees the EHT MLE in the parent frame. ieee80211_mle_get_mld_id() then reads past the IE boundary.

Leer descripción completaMostrar menos

Validate the MLE type and size before reading the MLD ID. This matches the contract required by the MLE helper and rejects the short element before any internal MLE fields are accessed.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 8.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.34%
Percentil entre todas las CVEs puntuadas: 25
Fecha de la puntuación: 5/10/2026

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).

🎯 Técnicas ATT&CK

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

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement85 %
Impacto principalT1499.004 Application or System Exploitationimpact75 %
Impacto secundarioT1068 Exploitation for Privilege Escalationprivilege escalation60 %

Vulnerabilidad en manejo de tramas EHT MLE desde AP malicioso en red adyacente (AV:A). Lectura fuera de límites causa DoS o potencial escalada de privilegios en kernel Linux.

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 Program Application Isolation and Sandboxing Exploit Protection Update Software Vulnerability Scanning Privileged Account Management

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

JSON original (NVD)

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{
  "id": "CVE-2026-68472",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "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": "61dcfa8c2a8f6c53ce77b2c832b82990754b2aa9",
              "lessThan": "584657c5fc58d7a840623a2fa06331c9661dd0f1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "61dcfa8c2a8f6c53ce77b2c832b82990754b2aa9",
              "lessThan": "3b0505e43da8fb5b2a7994c3c3604e5a74692154",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "61dcfa8c2a8f6c53ce77b2c832b82990754b2aa9",
              "lessThan": "74e27cd1d98b546fdb276008a83708d062339661",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/wireless/scan.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.14",
              "versionType": "semver"
            },
            {
              "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/wireless/scan.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:20:05.570",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3b0505e43da8fb5b2a7994c3c3604e5a74692154",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/584657c5fc58d7a840623a2fa06331c9661dd0f1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/74e27cd1d98b546fdb276008a83708d062339661",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: validate EHT MLE before MLD ID read\n\ncfg80211_gen_new_ie() copies ML probe response elements from\nthe parent frame when the parent EHT multi-link element has an\nMLD ID matching the nontransmitted BSSID index.\n\nThe code only checked that the extension element had more than\none byte before calling ieee80211_mle_get_mld_id(). That helper\nassumes a BASIC MLE with enough common info and documents that\ncallers must first use ieee80211_mle_type_ok().\n\nAttack chain:\nmalicious AP sends a short EHT MLE in an MBSSID beacon.\ncfg80211_inform_bss_frame_data() stores the copied IE buffer.\ncfg80211_parse_mbssid_data() builds the nontransmitted BSS IE.\ncfg80211_gen_new_ie() sees the EHT MLE in the parent frame.\nieee80211_mle_get_mld_id() then reads past the IE boundary.\n\nValidate the MLE type and size before reading the MLD ID. This\nmatches the contract required by the MLE helper and rejects the\nshort element before any internal MLE fields are accessed."
    }
  ],
  "lastModified": "2026-08-17T06:17:56.620",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}