Vulnerability-Lookup

GHSA-Q6X9-G333-77R4

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-25 09:31

Details

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

Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync

hci_get_route() returns a reference-counted hci_dev pointer via hci_dev_hold(). The function exits normally or with an error without ever releasing it.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53251"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync\n\nhci_get_route() returns a reference-counted hci_dev pointer via\nhci_dev_hold(). The function exits normally or with an error without ever\nreleasing it.",
  "id": "GHSA-q6x9-g333-77r4",
  "modified": "2026-06-25T09:31:22Z",
  "published": "2026-06-25T09:31:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53251"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-53251 (GCVE-0-2026-53251)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39

Title

Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync

Summary

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync hci_get_route() returns a reference-counted hci_dev pointer via hci_dev_hold(). The function exits normally or with an error without ever releasing it.

Severity

No CVSS data available.

Assigner

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/4bbec25f47b930101…
https://git.kernel.org/stable/c/33d677d2e3713d980…
https://git.kernel.org/stable/c/23e8eb16820b86652…
https://git.kernel.org/stable/c/5cbf290b79351971f…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1360e5b6ce63d63d23223a659ca2bbafa30a53aa , < 4bbec25f47b930101294fd310c627c3f53e9661f (git) Affected: 07a9342b94a91b306ed1cf6aa8254aea210764c9 , < 33d677d2e3713d98012c3dbd4a9207f7d785b854 (git) Affected: 07a9342b94a91b306ed1cf6aa8254aea210764c9 , < 23e8eb16820b866528fb300dc67fe3f67f00ef62 (git) Affected: 07a9342b94a91b306ed1cf6aa8254aea210764c9 , < 5cbf290b79351971f20c7a533247e8d58a3f970c (git) Affected: bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed (git) Affected: 6.12.2 , < 6.12.94 (semver) Affected: 6.11.11 , < 6.12 (semver)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "4bbec25f47b930101294fd310c627c3f53e9661f",
              "status": "affected",
              "version": "1360e5b6ce63d63d23223a659ca2bbafa30a53aa",
              "versionType": "git"
            },
            {
              "lessThan": "33d677d2e3713d98012c3dbd4a9207f7d785b854",
              "status": "affected",
              "version": "07a9342b94a91b306ed1cf6aa8254aea210764c9",
              "versionType": "git"
            },
            {
              "lessThan": "23e8eb16820b866528fb300dc67fe3f67f00ef62",
              "status": "affected",
              "version": "07a9342b94a91b306ed1cf6aa8254aea210764c9",
              "versionType": "git"
            },
            {
              "lessThan": "5cbf290b79351971f20c7a533247e8d58a3f970c",
              "status": "affected",
              "version": "07a9342b94a91b306ed1cf6aa8254aea210764c9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bfec1e55314896bf4a4cfdb3a9ad4872be9f06ed",
              "versionType": "git"
            },
            {
              "lessThan": "6.12.94",
              "status": "affected",
              "version": "6.12.2",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12",
              "status": "affected",
              "version": "6.11.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/iso.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.94",
                  "versionStartIncluding": "6.12.2",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.13",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.11.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync\n\nhci_get_route() returns a reference-counted hci_dev pointer via\nhci_dev_hold(). The function exits normally or with an error without ever\nreleasing it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:43.290Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4bbec25f47b930101294fd310c627c3f53e9661f"
        },
        {
          "url": "https://git.kernel.org/stable/c/33d677d2e3713d98012c3dbd4a9207f7d785b854"
        },
        {
          "url": "https://git.kernel.org/stable/c/23e8eb16820b866528fb300dc67fe3f67f00ef62"
        },
        {
          "url": "https://git.kernel.org/stable/c/5cbf290b79351971f20c7a533247e8d58a3f970c"
        }
      ],
      "title": "Bluetooth: ISO: Fix not releasing hdev reference on iso_conn_big_sync",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53251",
    "datePublished": "2026-06-25T08:39:43.290Z",
    "dateReserved": "2026-06-09T07:44:35.394Z",
    "dateUpdated": "2026-06-25T08:39:43.290Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-Q6X9-G333-77R4

CVE-2026-53251 (GCVE-0-2026-53251)

Tags

Sightings

Nomenclature