Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early

{
  "id": "c525b7e7a4be04112791b666600b95c9b865e93dce4dea208fb0afc92412ccb2",
  "url": "https://osv.dev/vulnerability/CVE-2023-53374",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: fail SCO/ISO via hci_conn_failed if ACL gone early Not calling hci_(dis)connect_cfm before deleting conn referred to by a socket generally results to use-after-free. When cleaning up SCO connections when the parent ACL is deleted too early, use hci_conn_failed to do the connection cleanup properly. We also need to clean up ISO connections in a similar situation when connecting has started but LE Create CIS is not yet sent, so do it too here.",
    "evidence": "osv:CVE-2023-53374",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "6.4.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.3",
            "evidence": "/affected/1/ranges"
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        "affected_versions": []
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    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-53374",
      "aliases": [
        "CVE-2023-53374"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
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                  "introduced": "75e35bd4b7935ceed2aacd82f55940e73bf0b63b"
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          "versions": [
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            "v6.3.12",
            "v6.3.11",
            "v6.3.10",
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        {
          "ranges": [
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              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.4.0"
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                  "fixed": "6.4.16"
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            {
              "type": "ECOSYSTEM",
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            "name": "Kernel",
            "ecosystem": "Linux"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53374.json"
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      ],
      "modified": "2026-10-28T02:30:22.968784025Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/3344d318337d9dca928fd448e966557ec5063f85",
        "https://git.kernel.org/stable/c/397d58007532644b35fad746da48c41161f32a57",
        "https://git.kernel.org/stable/c/e94b898463a62b72a2a8b75dea8936bf4db78e00",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53374.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53374",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53374.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53374",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488943,
  "published_at": "2025-09-18T13:33:20.965+00:00"
}