{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "800fe5ec302e1ebbf5e3f891f886deecd49c7132"
            },
            {
              "fixed": "472d005622525b7be155cac99dde2252b0163bd1"
            },
            {
              "fixed": "93b59937bda3fffc6386c79f5544a39bc680c8e8"
            },
            {
              "fixed": "fa391adb9c755515a89993634745e9079e5ef37c"
            },
            {
              "fixed": "1c12c3117639e78940959d956519c758c57d0849"
            }
          ],
          "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": "6.12.111"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.53"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97977.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: btusb: Fix UAF of btusb_data by rx_work\n\nbtusb_close() and btusb_flush() cancel data-\u003erx_work with the\nasynchronous cancel_delayed_work(), so if btusb_rx_work() is already\nrunning on another CPU it keeps running after the cancel returns.\n\nbtusb_disconnect() calls hci_unregister_dev(), which invokes\nbtusb_close(), and then frees the btusb_data. A still running\nbtusb_rx_work() then dereferences the freed data:\n\n\twhile ((skb = skb_dequeue(\u0026data-\u003eacl_q)))\n\t\tdata-\u003erecv_acl(data-\u003ehdev, skb);\n\nUse cancel_delayed_work_sync() instead. In btusb_close() the cancel also\nhas to happen after btusb_stop_traffic(), otherwise an URB completion\nracing with the cancel can requeue the work right after it has been\nwaited for.",
  "id": "CVE-2026-97977",
  "modified": "2026-09-27T03:30:48.084411947Z",
  "published": "2026-09-25T10:23:15.198Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c12c3117639e78940959d956519c758c57d0849"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/472d005622525b7be155cac99dde2252b0163bd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93b59937bda3fffc6386c79f5544a39bc680c8e8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fa391adb9c755515a89993634745e9079e5ef37c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/97xxx/CVE-2026-97977.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97977"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Bluetooth: btusb: Fix UAF of btusb_data by rx_work"
}