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CVE-2026-64463

Estado: RecibidaAlta (7.8)—

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

usb: typec: tcpci_rt1711h: unregister TCPCI port with devres

rt1711h_probe() registers the TCPCI port before requesting the interrupt and enabling alert interrupts. If either of those later steps fails, the probe function returns without unregistering the TCPCI port. The explicit unregister currently only happens from the remove callback.

Register a devres action immediately after tcpci_register_port() succeeds, so tcpci_unregister_port() runs on later probe failures and on driver detach. Drop the remove callback to avoid unregistering the same port twice.

Leer descripción completaMostrar menos

This issue was identified during our ongoing static-analysis research while reviewing kernel code.

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 local en kernel Linux (AV:L, PR:L) sin interacción del usuario permite escalada de privilegios mediante fallo de cleanup en probe. Código de ejecución o DoS posible si se corrompe estado de dispositivo USB.

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network Traffic

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-2026-64463",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": [
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              "version": "302c570bf36e997d55ad0d60628a2feec76954a4",
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            {
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            {
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            {
              "status": "affected",
              "version": "745dcedb896a740825160228f98dbb5725a49f85",
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            {
              "status": "affected",
              "version": "4.19.131",
              "lessThan": "4.20",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.4.50",
              "lessThan": "5.5",
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            },
            {
              "status": "affected",
              "version": "5.7.7",
              "lessThan": "5.8",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/tcpm/tcpci_rt1711h.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.8",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/tcpm/tcpci_rt1711h.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-07-25T10:17:31.543",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/569f18a83eed0b0be4615f0c7bed40fb5c50e2e6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/94b1abf1af94aa5a355e9f03675e07bccfc41c4b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ce2e36e8759dfbfe546723810c306f42f484866d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8da46d99d3710106e7c44db14566bf9b57386b5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: tcpci_rt1711h: unregister TCPCI port with devres\n\nrt1711h_probe() registers the TCPCI port before requesting the interrupt\nand enabling alert interrupts. If either of those later steps fails, the\nprobe function returns without unregistering the TCPCI port. The explicit\nunregister currently only happens from the remove callback.\n\nRegister a devres action immediately after tcpci_register_port() succeeds,\nso tcpci_unregister_port() runs on later probe failures and on driver\ndetach. Drop the remove callback to avoid unregistering the same port\ntwice.\n\nThis issue was identified during our ongoing static-analysis research while\nreviewing kernel code."
    }
  ],
  "lastModified": "2026-08-17T05:17:51.597",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}