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  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90224.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: nci: fix double completion race in nci_data_exchange_complete\n\nnci_close_device() and nci_rx_work can both call\nnci_data_exchange_complete() concurrently.  After commit 4527025d440ce8\n(\"nfc: nci: fix circular locking dependency in nci_close_device\") moved\nflush_workqueue(ndev-\u003erx_wq) after mutex_unlock(\u0026ndev-\u003ereq_lock),\nrx_work is no longer serialized with the explicit completion call in the\nclose path.  Both callers read the non-NULL callback pointer and invoke\nrawsock_data_exchange_complete(), which calls sock_put() -- but only one\nsock_hold() was taken, so the second sock_put() underflows the refcount\nand frees the socket while it is still in use.\n\nReplace the bare clear_bit(NCI_DATA_EXCHANGE) with\ntest_and_clear_bit() so that only the first caller proceeds to invoke\nthe callback.",
  "id": "CVE-2026-90224",
  "modified": "2026-09-19T03:31:00.379859215Z",
  "published": "2026-09-17T16:07:34.009Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca"
    },
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      "url": "https://git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305"
    },
    {
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      "url": "https://git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bfdf412208fea7fc0d5b32d68a35b25261917393"
    },
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      "url": "https://git.kernel.org/stable/c/cf646a9f5554bc07d6ccb59c327812b3a0c6a368"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee08414d78b851e3d1856d6e4d631939b01a1bbe"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90224.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90224"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nfc: nci: fix double completion race in nci_data_exchange_complete"
}