CVE-2025-71082 (GCVE-0-2025-71082)

Vulnerability from cvelistv5 – Published: 2026-01-13 15:34 – Updated: 2026-08-05 12:11
VLAI
Title
Bluetooth: btusb: revert use of devm_kzalloc in btusb
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: revert use of devm_kzalloc in btusb This reverts commit 98921dbd00c4e ("Bluetooth: Use devm_kzalloc in btusb.c file"). In btusb_probe(), we use devm_kzalloc() to allocate the btusb data. This ties the lifetime of all the btusb data to the binding of a driver to one interface, INTF. In a driver that binds to other interfaces, ISOC and DIAG, this is an accident waiting to happen. The issue is revealed in btusb_disconnect(), where calling usb_driver_release_interface(&btusb_driver, data->intf) will have devm free the data that is also being used by the other interfaces of the driver that may not be released yet. To fix this, revert the use of devm and go back to freeing memory explicitly.
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 2026-06-10 20:41 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 98921dbd00c4e2e4bdd56423cb5edf98d57b45f7 , < fff9206b0907252a41eb12b7c1407b9347df18b1 (git)
Affected: 98921dbd00c4e2e4bdd56423cb5edf98d57b45f7 , < cca0e9206e3bcc63cd3e72193e60149165d493cc (git)
Affected: 98921dbd00c4e2e4bdd56423cb5edf98d57b45f7 , < c0ecb3e4451fe94f4315e6d09c4046dfbc42090b (git)
Affected: 98921dbd00c4e2e4bdd56423cb5edf98d57b45f7 , < 1e54c19eaf84ba652c4e376571093e58e144b339 (git)
Affected: 98921dbd00c4e2e4bdd56423cb5edf98d57b45f7 , < fdf7c640fb8a44a59b0671143d8c2f738bc48003 (git)
Affected: 98921dbd00c4e2e4bdd56423cb5edf98d57b45f7 , < 252714f1e8bdd542025b16321c790458014d6880 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.4 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: revert use of devm_kzalloc in btusb\n\nThis reverts commit 98921dbd00c4e (\"Bluetooth: Use devm_kzalloc in\nbtusb.c file\").\n\nIn btusb_probe(), we use devm_kzalloc() to allocate the btusb data. This\nties the lifetime of all the btusb data to the binding of a driver to\none interface, INTF. In a driver that binds to other interfaces, ISOC\nand DIAG, this is an accident waiting to happen.\n\nThe issue is revealed in btusb_disconnect(), where calling\nusb_driver_release_interface(\u0026btusb_driver, data-\u003eintf) will have devm\nfree the data that is also being used by the other interfaces of the\ndriver that may not be released yet.\n\nTo fix this, revert the use of devm and go back to freeing memory\nexplicitly."
          },
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            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: btusb: revertir el uso de devm_kzalloc en btusb\n\nEsto revierte el commit 98921dbd00c4e (\u0027Bluetooth: Usar devm_kzalloc en el archivo btusb.c\u0027).\n\nEn btusb_probe(), usamos devm_kzalloc() para asignar los datos de btusb. Esto vincula la vida \u00fatil de todos los datos de btusb a la vinculaci\u00f3n de un controlador a una interfaz, INTF. En un controlador que se vincula a otras interfaces, ISOC y DIAG, esto es un accidente a punto de ocurrir.\n\nEl problema se revela en btusb_disconnect(), donde llamar a usb_driver_release_interface(\u0026amp;btusb_driver, data-\u0026gt;intf) har\u00e1 que devm libere los datos que tambi\u00e9n est\u00e1n siendo utilizados por las otras interfaces del controlador que quiz\u00e1s a\u00fan no se hayan liberado.\n\nPara solucionar esto, se revierte el uso de devm y se vuelve a liberar la memoria expl\u00edcitamente."
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        "id": "CVE-2025-71082",
        "lastModified": "2026-07-30T06:24:49.390",
        "metrics": {
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              "cvssData": {
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                "attackVector": "LOCAL",
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                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            },
            {
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                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2025-71082",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T20:41:23.595912Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-01-13T16:16:07.780",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
          {
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
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            ],
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    },
    "redhat_vex": {
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      "current_release_date": "2026-09-23T03:37:50+00:00",
      "cve": "CVE-2025-71082",
      "id": "CVE-2025-71082",
      "initial_release_date": "2025-01-01T00:00:00+00:00",
      "product_status:fixed": "150",
      "product_status:known_affected": "226",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: btusb: revert use of devm_kzalloc in btusb",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-71082.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-23T00:32:11Z",
      "cve": "CVE-2025-71082",
      "id": "CVE-2025-71082",
      "initial_release_date": "2026-01-14T00:25:44Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "699",
      "product_status:known_not_affected": "9",
      "product_status:recommended": "326",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-71082",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-71082.json",
      "version": "34"
    },
    "vulnrichment": {
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          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-71082",
                    "options": [
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                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-06-10T20:41:23.595912Z",
                    "version": "2.0.3"
                  },
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              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-11T17:38:18.846Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
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              "product": "Linux",
              "programFiles": [
                "drivers/bluetooth/btusb.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
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                {
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                {
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                {
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                  "versionType": "git"
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              ]
            },
            {
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              "product": "Linux",
              "programFiles": [
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              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "3.7"
                },
                {
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                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
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                {
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                  "status": "unaffected",
                  "version": "5.15.198",
                  "versionType": "semver"
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                {
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                  "status": "unaffected",
                  "version": "6.1.160",
                  "versionType": "semver"
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                {
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                  "status": "unaffected",
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                  "versionType": "semver"
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                {
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                  "status": "unaffected",
                  "version": "6.12.64",
                  "versionType": "semver"
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                {
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                  "status": "unaffected",
                  "version": "6.18.4",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.19",
                  "versionType": "original_commit_for_fix"
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              ]
            }
          ],
          "cpeApplicability": [
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                      "vulnerable": true
                    },
                    {
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                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                      "vulnerable": true
                    },
                    {
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                    },
                    {
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                      "vulnerable": true
                    },
                    {
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                    }
                  ],
                  "negate": false,
                  "operator": "OR"
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              ]
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          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: revert use of devm_kzalloc in btusb\n\nThis reverts commit 98921dbd00c4e (\"Bluetooth: Use devm_kzalloc in\nbtusb.c file\").\n\nIn btusb_probe(), we use devm_kzalloc() to allocate the btusb data. This\nties the lifetime of all the btusb data to the binding of a driver to\none interface, INTF. In a driver that binds to other interfaces, ISOC\nand DIAG, this is an accident waiting to happen.\n\nThe issue is revealed in btusb_disconnect(), where calling\nusb_driver_release_interface(\u0026btusb_driver, data-\u003eintf) will have devm\nfree the data that is also being used by the other interfaces of the\ndriver that may not be released yet.\n\nTo fix this, revert the use of devm and go back to freeing memory\nexplicitly."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T21:54:23.734Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
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            },
            {
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            {
              "url": "https://git.kernel.org/stable/c/fdf7c640fb8a44a59b0671143d8c2f738bc48003"
            },
            {
              "url": "https://git.kernel.org/stable/c/252714f1e8bdd542025b16321c790458014d6880"
            }
          ],
          "title": "Bluetooth: btusb: revert use of devm_kzalloc in btusb",
          "x_generator": {
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      },
      "cveMetadata": {
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        "assignerShortName": "Linux",
        "cveId": "CVE-2025-71082",
        "datePublished": "2026-01-13T15:34:46.301Z",
        "dateReserved": "2026-01-13T15:30:19.648Z",
        "dateUpdated": "2026-06-11T18:44:11.870Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.