{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53520",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53520",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-01T11:46:07.355Z",
    "updatedAt": "2026-10-15T21:41:29.915Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Bluetooth: Fix hci_suspend_sync crash",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: Fix hci_suspend_sync crash\n\nIf hci_unregister_dev() frees the hci_dev object but hci_suspend_notifier\nmay still be accessing it, it can cause the program to crash.\nHere's the call trace:\n  <4>[102152.653246] Call Trace:\n  <4>[102152.653254]  hci_suspend_sync+0x109/0x301 [bluetooth]\n  <4>[102152.653259]  hci_suspend_dev+0x78/0xcd [bluetooth]\n  <4>[102152.653263]  hci_suspend_notifier+0x42/0x7a [bluetooth]\n  <4>[102152.653268]  notifier_call_chain+0x43/0x6b\n  <4>[102152.653271]  __blocking_notifier_call_chain+0x48/0x69\n  <4>[102152.653273]  __pm_notifier_call_chain+0x22/0x39\n  <4>[102152.653276]  pm_suspend+0x287/0x57c\n  <4>[102152.653278]  state_store+0xae/0xe5\n  <4>[102152.653281]  kernfs_fop_write+0x109/0x173\n  <4>[102152.653284]  __vfs_write+0x16f/0x1a2\n  <4>[102152.653287]  ? selinux_file_permission+0xca/0x16f\n  <4>[102152.653289]  ? security_file_permission+0x36/0x109\n  <4>[102152.653291]  vfs_write+0x114/0x21d\n  <4>[102152.653293]  __x64_sys_write+0x7b/0xdb\n  <4>[102152.653296]  do_syscall_64+0x59/0x194\n  <4>[102152.653299]  entry_SYSCALL_64_after_hwframe+0x5c/0xc1\n\nThis patch holds the reference count of the hci_dev object while\nprocessing it in hci_suspend_notifier to avoid potential crash\ncaused by the race condition.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e1fa25a91091bbed691ba2996a6cee809e3309a2"
            },
            {
              "version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
              "status": "affected",
              "versionType": "git",
              "lessThan": "06e2b5ad72b60f90bfe565c201346532e271f484"
            },
            {
              "version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f9c8ce5d665653e3cf71a76349d41d7a7f7947e6"
            },
            {
              "version": "9952d90ea2885d7cbf80cd233f694f09a9c0eaec",
              "status": "affected",
              "versionType": "git",
              "lessThan": "573ebae162111063eedc6c838a659ba628f66a0f"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.7"
            },
            {
              "version": "5.15.199",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.55",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.5.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "version": "6.6",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}