CVE-2025-40283 (GCVE-0-2025-40283)

Vulnerability from cvelistv5 – Published: 2025-12-06 21:51 – Updated: 2026-10-15 22:02
VLAI
Title
Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF
Summary
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.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 21:58 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < 297dbf87989e09af98f81f2bcb938041785557e8 (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < f858f004bc343a7ae9f2533bbb2a3ab27428532f (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < 7a6d1e740220ff9dfcb6a8c994d6ba49e76db198 (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < 5dc00065a0496c36694afe11e52a5bc64524a9b8 (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < 1c28c1e1522c773a94e26950ffb145e88cd9834b (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < 95b9b98c93b1c0916a3d4cf4540b7f5d69145a0d (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < a2610ecd9fd5708be8997ca8f033e4200c0bb6af (git)
Affected: fd913ef7ce619467c6b0644af48ba1fec499c623 , < 23d22f2f71768034d6ef86168213843fc49bf550 (git)
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Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.4.302 , ≤ 5.4.* (semver)
Unaffected: 5.10.247 , ≤ 5.10.* (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.59 , ≤ 6.12.* (semver)
Unaffected: 6.17.9 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "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(\u0026btusb_driver, data-\u003eintf)\" 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\u0027d."
          },
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            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: btusb: reordenar la limpieza en btusb_disconnect para evitar UAF\n\nHay una lectura KASAN: slab-use-after-free en btusb_disconnect().\nLlamar a \u0027usb_driver_release_interface(\u0026btusb_driver, data -\u003e intf)\u0027 liberar\u00e1 los datos de btusb asociados con la interfaz. Los mismos datos se utilizan luego en la funci\u00f3n, de ah\u00ed el UAF.\n\nSoluci\u00f3n moviendo los accesos a los datos de btusb a antes de que los datos sean liberados."
          }
        ],
        "id": "CVE-2025-40283",
        "lastModified": "2026-10-15T22:19:06.820",
        "metrics": {
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                "confidentialityImpact": "HIGH",
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                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
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        "published": "2025-12-06T22:15:56.393",
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          {
            "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"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Deferred"
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-30T08:38:03+00:00",
      "cve": "CVE-2025-40283",
      "id": "CVE-2025-40283",
      "initial_release_date": "2025-12-06T00:00:00+00:00",
      "product_status:known_affected": "246",
      "product_status:known_not_affected": "28",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-40283.json",
      "version": "3"
    }
  }
}



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