{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "*"
              },
              {
                "last_affected": "3.3"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "07c6af3b8c35c1e49186578ca61a25c76e2fb308"
            }
          ],
          "repo": "https://github.com/zephyrproject-rtos/zephyr",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-xvvm-8mcm-9cq3"
  ],
  "database_specific": {
    "cna_assigner": "zephyr",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1901.json"
  },
  "details": "The bluetooth HCI host layer logic not clearing a global reference to a semaphore after synchronously sending HCI commands may allow a malicious HCI Controller to cause the use of a dangling reference in the host layer, leading to a crash (DoS) or potential RCE on the Host layer.\n\n\n",
  "id": "CVE-2023-1901",
  "modified": "2026-07-15T01:48:53.959981803Z",
  "published": "2023-07-10T04:37:33.126Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1901.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-xvvm-8mcm-9cq3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-1901"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/zephyrproject-rtos/zephyr"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "HCI send_sync Dangling Semaphore Reference Re-use"
}