{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_conn.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "357ab53c83a5322437fa434e9a9e3e0bafe6b383",
              "status": "affected",
              "version": "06149746e7203d5ffe2d6faf9799ee36203aa8b8",
              "versionType": "git"
            },
            {
              "lessThan": "b4066eb04bb67e7ff66e5aaab0db4a753f37eaad",
              "status": "affected",
              "version": "06149746e7203d5ffe2d6faf9799ee36203aa8b8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f72fc94a17d45be98aecfd59c39b5b24a6a342e2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bluetooth/hci_conn.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "lessThan": "6.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.7",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "6.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link\n\nhci_connect_sco currently returns NULL when there is no link (i.e. when\nhci_conn_link() returns NULL).\n\nsco_connect() expects an ERR_PTR in case of any error (see line 266 in\nsco.c). Thus, hcon set as NULL passes through to sco_conn_add(), which\ntries to get hcon-\u003ehdev, resulting in dereferencing a NULL pointer as\nreported by syzkaller.\n\nThe same issue exists for iso_connect_cis() calling hci_connect_cis().\n\nThus, make hci_connect_sco() and hci_connect_cis() return ERR_PTR\ninstead of NULL."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-24T10:56:04.623Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/357ab53c83a5322437fa434e9a9e3e0bafe6b383"
        },
        {
          "url": "https://git.kernel.org/stable/c/b4066eb04bb67e7ff66e5aaab0db4a753f37eaad"
        }
      ],
      "title": "Bluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54038",
    "datePublished": "2025-12-24T10:56:04.623Z",
    "dateReserved": "2025-12-24T10:53:46.181Z",
    "dateUpdated": "2025-12-24T10:56:04.623Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54038\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-24T11:15:56.793\",\"lastModified\":\"2025-12-29T15:58:56.260\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: hci_conn: return ERR_PTR instead of NULL when there is no link\\n\\nhci_connect_sco currently returns NULL when there is no link (i.e. when\\nhci_conn_link() returns NULL).\\n\\nsco_connect() expects an ERR_PTR in case of any error (see line 266 in\\nsco.c). Thus, hcon set as NULL passes through to sco_conn_add(), which\\ntries to get hcon-\u003ehdev, resulting in dereferencing a NULL pointer as\\nreported by syzkaller.\\n\\nThe same issue exists for iso_connect_cis() calling hci_connect_cis().\\n\\nThus, make hci_connect_sco() and hci_connect_cis() return ERR_PTR\\ninstead of NULL.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/357ab53c83a5322437fa434e9a9e3e0bafe6b383\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4066eb04bb67e7ff66e5aaab0db4a753f37eaad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}