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CVE-2026-72334

Estado: RecibidaAlta (8.8)—

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

Bluetooth: ISO: fix malformed ISO_END/CONT handling

Core specification (Part C vol 4 sec 5.4.5) does not exclude empty ISO_CONT, ISO_END packets. We currently reject them if they are last.

If controller sends malformed sequence

that ends payload in ISO_CONT, we leak conn->rx_skb. If controller sends too long ISO_END, we panic on skb_put. If controller sends too short ISO_END we accept it.

Fix by marking unfinished ISO_START via conn->rx_skb != NULL. Check skb->len properly before skb_put. Combine the ISO_CONT/END code paths as they require the same initial checks. Reject too short ISO_END packets.

Detalles técnicos trazas, registros y código del informe original
    ISO_START -> rx_len = 4, ISO_CONT skb->len 4, ISO_START

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.

Vulnerabilidad en controlador Bluetooth (red adyacente, AV:A) en kernel Linux que causa pánico (DoS) o corrupción de memoria si el controlador envía paquetes ISO malformados; potencial escalada de privilegios via kernel memory corruption.

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 ProgramApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability ScanningPrivileged 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 KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-72334",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "lessThan": "d2df29dc9abda2fc10ff522eac0969f5b77b3637",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "lessThan": "7250b6b5ba9b737cff2c2c1d0760360c7b6bca00",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "lessThan": "49aeb54e3c912ef785311264a51ab9f3698e421b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "lessThan": "5e53e285f8c989662e34d4938c728a94226bff34",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "lessThan": "990e65eb9387c4ddfa7f68782b6644c2c35d489f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ccf74f2390d60a2f9a75ef496d2564abb478f46a",
              "lessThan": "e054c1a6ae7310d2815778fddb87da616e11c255",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver"
            },
            {
              "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": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "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/bluetooth/iso.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:06.580",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/49aeb54e3c912ef785311264a51ab9f3698e421b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5e53e285f8c989662e34d4938c728a94226bff34",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7250b6b5ba9b737cff2c2c1d0760360c7b6bca00",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/990e65eb9387c4ddfa7f68782b6644c2c35d489f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d2df29dc9abda2fc10ff522eac0969f5b77b3637",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e054c1a6ae7310d2815778fddb87da616e11c255",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: fix malformed ISO_END/CONT handling\n\nCore specification (Part C vol 4 sec 5.4.5) does not exclude empty\nISO_CONT, ISO_END packets.  We currently reject them if they are last.\n\nIf controller sends malformed sequence\n\n    ISO_START -> rx_len = 4, ISO_CONT skb->len 4, ISO_START\n\nthat ends payload in ISO_CONT, we leak conn->rx_skb. If controller sends\ntoo long ISO_END, we panic on skb_put. If controller sends too short\nISO_END we accept it.\n\nFix by marking unfinished ISO_START via conn->rx_skb != NULL.  Check\nskb->len properly before skb_put.  Combine the ISO_CONT/END code paths\nas they require the same initial checks. Reject too short ISO_END\npackets."
    }
  ],
  "lastModified": "2026-10-03T11:17:37.343",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}