CVE-2025-40283

Estado: AplazadaAlta (7.8)—

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

Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF

There is a KASAN: slab-use-after-free read in btusb_disconnect(). Calling "usb_driver_release_interface(&btusb_driver, data->intf)" will free the btusb data associated with the interface. The same data is then used later in the function, hence the UAF.

Fix by moving the accesses to btusb data to before the data is free'd.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.14%
Percentil entre todas las CVEs puntuadas: 3
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1499.004 Application or System Exploitationimpact75 %

UAF en controlador USB Bluetooth con PR:L permite DoS/corrupción de memoria en local; reordenamiento de limpieza previene acceso a datos liberados.

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 Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

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)

Mostrar

{
  "id": "CVE-2025-40283",
  "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": [
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "297dbf87989e09af98f81f2bcb938041785557e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "f858f004bc343a7ae9f2533bbb2a3ab27428532f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "7a6d1e740220ff9dfcb6a8c994d6ba49e76db198",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "5dc00065a0496c36694afe11e52a5bc64524a9b8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "1c28c1e1522c773a94e26950ffb145e88cd9834b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "a2610ecd9fd5708be8997ca8f033e4200c0bb6af",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "fd913ef7ce619467c6b0644af48ba1fec499c623",
              "lessThan": "23d22f2f71768034d6ef86168213843fc49bf550",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/bluetooth/btusb.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.4.302",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.247",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.59",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/bluetooth/btusb.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-06T22:15:56.393",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1c28c1e1522c773a94e26950ffb145e88cd9834b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/23d22f2f71768034d6ef86168213843fc49bf550",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/297dbf87989e09af98f81f2bcb938041785557e8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5dc00065a0496c36694afe11e52a5bc64524a9b8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7a6d1e740220ff9dfcb6a8c994d6ba49e76db198",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a2610ecd9fd5708be8997ca8f033e4200c0bb6af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f858f004bc343a7ae9f2533bbb2a3ab27428532f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF\n\nThere is a KASAN: slab-use-after-free read in btusb_disconnect().\nCalling \"usb_driver_release_interface(&btusb_driver, data->intf)\" will\nfree the btusb data associated with the interface. The same data is\nthen used later in the function, hence the UAF.\n\nFix by moving the accesses to btusb data to before the data is free'd."
    }
  ],
  "lastModified": "2026-07-30T06:24:26.490",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}