{"cve":"CVE-2026-90224","nvd":{"published":"2026-09-17T17:17:17.997","modified":"2026-10-19T09:19:12.647","status":"Received","description":"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->rx_wq) after mutex_unlock(&ndev->req_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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":[],"references":["https://git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca","https://git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305","https://git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2","https://git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2","https://git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-90224","score":0.00357,"percentile":0.29134,"date":"2026-10-26"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}