Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor()

{
  "id": "de519f006dbbc206558d5b52c3f2021ec23e768bfa5aa61d7f7031dbfc030363",
  "url": "https://osv.dev/vulnerability/CVE-2023-53828",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor()",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor() KSAN reports use-after-free in hci_add_adv_monitor(). While adding an adv monitor, hci_add_adv_monitor() calls -> msft_add_monitor_pattern() calls -> msft_add_monitor_sync() calls -> msft_le_monitor_advertisement_cb() calls in an error case -> hci_free_adv_monitor() which frees the *moniter. This is referenced by bt_dev_dbg() in hci_add_adv_monitor(). Fix the bt_dev_dbg() by using handle instead of monitor->handle.",
    "evidence": "osv:CVE-2023-53828",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.53",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.4.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-53828",
      "aliases": [
        "CVE-2023-53828"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "b747a83690c8f53bc7a3f75899415c699b2c51aa"
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                {
                  "fixed": "81d8e9f59df63b8358751c1ffed9f1cf5c796909"
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                {
                  "fixed": "aafda69d4807f5edf3558c9534be9b911774e63a"
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                {
                  "fixed": "8d66f7ced51cb924bc90278d6a0a26a52877271a"
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                {
                  "fixed": "a2bcd2b63271a93a695fabbfbf459c603d956d48"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53828.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.0.0"
                },
                {
                  "fixed": "6.1.53"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.4.16"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.5.0"
                },
                {
                  "fixed": "6.5.3"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53828.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.636753283Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/81d8e9f59df63b8358751c1ffed9f1cf5c796909",
        "https://git.kernel.org/stable/c/8d66f7ced51cb924bc90278d6a0a26a52877271a",
        "https://git.kernel.org/stable/c/a2bcd2b63271a93a695fabbfbf459c603d956d48",
        "https://git.kernel.org/stable/c/aafda69d4807f5edf3558c9534be9b911774e63a",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53828.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53828",
        "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-2023-53828.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-53828",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497398,
  "published_at": "2025-12-09T01:29:42.166+00:00"
}