{
  "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-2025-38593",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-38593",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-08-19T17:03:18.960Z",
    "updatedAt": "2026-10-15T22:02:26.347Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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: hci_sync: fix double free in 'hci_discovery_filter_clear()'",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_sync: fix double free in 'hci_discovery_filter_clear()'\n\nFunction 'hci_discovery_filter_clear()' frees 'uuids' array and then\nsets it to NULL. There is a tiny chance of the following race:\n\n'hci_cmd_sync_work()'\n\n 'update_passive_scan_sync()'\n\n   'hci_update_passive_scan_sync()'\n\n     'hci_discovery_filter_clear()'\n       kfree(uuids);\n\n       <-------------------------preempted-------------------------------->\n                                           'start_service_discovery()'\n\n                                             'hci_discovery_filter_clear()'\n                                               kfree(uuids); // DOUBLE FREE\n\n       <-------------------------preempted-------------------------------->\n\n      uuids = NULL;\n\nTo fix it let's add locking around 'kfree()' call and NULL pointer\nassignment. Otherwise the following backtrace fires:\n\n[ ] ------------[ cut here ]------------\n[ ] kernel BUG at mm/slub.c:547!\n[ ] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP\n[ ] CPU: 3 UID: 0 PID: 246 Comm: bluetoothd Tainted: G O 6.12.19-kernel #1\n[ ] Tainted: [O]=OOT_MODULE\n[ ] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)\n[ ] pc : __slab_free+0xf8/0x348\n[ ] lr : __slab_free+0x48/0x348\n...\n[ ] Call trace:\n[ ]  __slab_free+0xf8/0x348\n[ ]  kfree+0x164/0x27c\n[ ]  start_service_discovery+0x1d0/0x2c0\n[ ]  hci_sock_sendmsg+0x518/0x924\n[ ]  __sock_sendmsg+0x54/0x60\n[ ]  sock_write_iter+0x98/0xf8\n[ ]  do_iter_readv_writev+0xe4/0x1c8\n[ ]  vfs_writev+0x128/0x2b0\n[ ]  do_writev+0xfc/0x118\n[ ]  __arm64_sys_writev+0x20/0x2c\n[ ]  invoke_syscall+0x68/0xf0\n[ ]  el0_svc_common.constprop.0+0x40/0xe0\n[ ]  do_el0_svc+0x1c/0x28\n[ ]  el0_svc+0x30/0xd0\n[ ]  el0t_64_sync_handler+0x100/0x12c\n[ ]  el0t_64_sync+0x194/0x198\n[ ] Code: 8b0002e6 eb17031f 54fffbe1 d503201f (d4210000)\n[ ] ---[ end trace 0000000000000000 ]---",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ad383c2c65a5baf16e334cd40a013cc302176891",
              "status": "affected",
              "versionType": "git",
              "lessThan": "86f3dcd1f331cfd4fd7ec88906955134ec51afbe"
            },
            {
              "version": "ad383c2c65a5baf16e334cd40a013cc302176891",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7ce9bb0b95fc280e9212b8922590c492ca1d9c39"
            },
            {
              "version": "ad383c2c65a5baf16e334cd40a013cc302176891",
              "status": "affected",
              "versionType": "git",
              "lessThan": "16852eccbdfaf41a666705e3f8be55cf2864c5ca"
            },
            {
              "version": "ad383c2c65a5baf16e334cd40a013cc302176891",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a351ff6b8ecca4229afaa0d98042bead8de64799"
            },
            {
              "version": "ad383c2c65a5baf16e334cd40a013cc302176891",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f8069f34c4c976786ded97498012225af87435d7"
            },
            {
              "version": "ad383c2c65a5baf16e334cd40a013cc302176891",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2935e556850e9c94d7a00adf14d3cd7fe406ac03"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.17"
            },
            {
              "version": "6.1.159",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.117",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.42",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.15.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "version": "6.16.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "version": "6.17",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}