CVE-2023-54210

{
  "id": "CVE-2023-54210",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-12-30T13:16:09.197",
  "lastModified": "2026-10-28T19:10:00.193",
  "vulnStatus": "Deferred",
  "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's 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() ->\n  msft_remove_monitor() ->\n  msft_remove_monitor_sync() ->\n  msft_le_cancel_monitor_advertisement_cb() ->\n  hci_free_adv_monitor()\n\nLet's fix the problem by just stashing the relevant data when it's\nstill valid."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nBluetooth: hci_sync: Evitar uso después de liberación en dbg para hci_remove_adv_monitor()\n\nKASAN informa que hay un uso después de liberación en\nhci_remove_adv_monitor(). Revisando el desensamblado, se puede\nver que la queja proviene del acceso en bt_dev_dbg() bajo el\ncaso HCI_ADV_MONITOR_EXT_MSFT. El caso problemático ocurre porque\nmsft_remove_monitor() puede terminar liberando la estructura del monitor.\nEspecíficamente:\n  hci_remove_adv_monitor()   ->  \n  msft_remove_monitor()   ->  \n  msft_remove_monitor_sync()   ->  \n  msft_le_cancel_monitor_advertisement_cb()   ->  \n  hci_free_adv_monitor()\n\nVamos a solucionar el problema simplemente guardando los datos relevantes cuando aún son válidos."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/bluetooth/hci_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c",
              "lessThan": "0d4d6b083da9b033ddccef72d77f373c819ae3ea",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c",
              "lessThan": "bf00c2c8f6254f44ac041aa9a311ae9e0caf692b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "7cf5c2978f23fdbb2dd7b4e8b07e362ae2d8211c",
              "lessThan": "de6dfcefd107667ce2dbedf4d9337f5ed557a4a1",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/bluetooth/hci_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.42",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.4.7",
              "lessThanOrEqual": "6.4.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.5",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-15T21:39:22.862450Z",
          "id": "CVE-2023-54210",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "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"
    }
  ]
}