CVE-2023-54210 (GCVE-0-2023-54210)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:11 – Updated: 2025-12-30 12:11
VLAI?
Title
Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor() KASAN reports that there's a use-after-free in hci_remove_adv_monitor(). Trawling through the disassembly, you can see that the complaint is from the access in bt_dev_dbg() under the HCI_ADV_MONITOR_EXT_MSFT case. The problem case happens because msft_remove_monitor() can end up freeing the monitor structure. Specifically: hci_remove_adv_monitor() -> msft_remove_monitor() -> msft_remove_monitor_sync() -> msft_le_cancel_monitor_advertisement_cb() -> hci_free_adv_monitor() Let's fix the problem by just stashing the relevant data when it's still valid.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c , < 0d4d6b083da9b033ddccef72d77f373c819ae3ea (git)
Affected: 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c , < bf00c2c8f6254f44ac041aa9a311ae9e0caf692b (git)
Affected: 7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c , < de6dfcefd107667ce2dbedf4d9337f5ed557a4a1 (git)
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    Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (semver)
Unaffected: 6.1.42 , ≤ 6.1.* (semver)
Unaffected: 6.4.7 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
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          "programFiles": [
            "net/bluetooth/hci_core.c"
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()\n\nKASAN reports that there\u0027s a use-after-free in\nhci_remove_adv_monitor(). Trawling through the disassembly, you can\nsee that the complaint is from the access in bt_dev_dbg() under the\nHCI_ADV_MONITOR_EXT_MSFT case. The problem case happens because\nmsft_remove_monitor() can end up freeing the monitor\nstructure. Specifically:\n  hci_remove_adv_monitor() -\u003e\n  msft_remove_monitor() -\u003e\n  msft_remove_monitor_sync() -\u003e\n  msft_le_cancel_monitor_advertisement_cb() -\u003e\n  hci_free_adv_monitor()\n\nLet\u0027s fix the problem by just stashing the relevant data when it\u0027s\nstill valid."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-30T12:11:08.682Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      ],
      "title": "Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()",
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    "cveId": "CVE-2023-54210",
    "datePublished": "2025-12-30T12:11:08.682Z",
    "dateReserved": "2025-12-30T12:06:44.500Z",
    "dateUpdated": "2025-12-30T12:11:08.682Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54210\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:09.197\",\"lastModified\":\"2025-12-31T20:43:05.160\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: hci_sync: Avoid use-after-free in dbg for hci_remove_adv_monitor()\\n\\nKASAN reports that there\u0027s a use-after-free in\\nhci_remove_adv_monitor(). Trawling through the disassembly, you can\\nsee that the complaint is from the access in bt_dev_dbg() under the\\nHCI_ADV_MONITOR_EXT_MSFT case. The problem case happens because\\nmsft_remove_monitor() can end up freeing the monitor\\nstructure. Specifically:\\n  hci_remove_adv_monitor() -\u003e\\n  msft_remove_monitor() -\u003e\\n  msft_remove_monitor_sync() -\u003e\\n  msft_le_cancel_monitor_advertisement_cb() -\u003e\\n  hci_free_adv_monitor()\\n\\nLet\u0027s fix the problem by just stashing the relevant data when it\u0027s\\nstill valid.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0d4d6b083da9b033ddccef72d77f373c819ae3ea\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/bf00c2c8f6254f44ac041aa9a311ae9e0caf692b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/de6dfcefd107667ce2dbedf4d9337f5ed557a4a1\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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