{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "95118dd4edfec950898a00180c6f998df0a6406d"
            },
            {
              "fixed": "59eecf0ffde15670e6a5e10c47be67f73d843b20"
            },
            {
              "fixed": "5fb69e1eeea9d6cba80517e9f058b56b34bc3a81"
            },
            {
              "fixed": "7cadb03be37e761130edb153544fe0770a842b19"
            },
            {
              "fixed": "1d0bdbfe3e91c11f0a704c52443a9446a10d699c"
            },
            {
              "fixed": "ea3cd36d7382d5f8309df04c275d20df139ed42c"
            },
            {
              "fixed": "b255531b27da336571411248c2a72a350662bd09"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.17.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43018.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt\n\nhci_conn lookup and field access must be covered by hdev lock in\nhci_le_remote_conn_param_req_evt, otherwise it's possible it is freed\nconcurrently.\n\nExtend the hci_dev_lock critical section to cover all conn usage.",
  "id": "CVE-2026-43018",
  "modified": "2026-07-08T05:38:51.619410804Z",
  "published": "2026-05-01T14:15:22.308Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43018.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43018"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt"
}