---
id: CVE-2026-90224
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nfc: nci: fix double completion race in nci_data_exchange_complete

  nci_close_device() and nci_rx_work can both call
  nci_data_exchange_complete() concurrently
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  nfc: nci: fix double completion race in nci_data_exchange_complete

  nci_close_device() and nci_rx_work can both call
  nci_data_exchange_complete() concurrently.  After c…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 7ed00a3edc8597fe2333f524401e2889aa1b5edf <
    3f075832734005310740d148d1cf1c1e792ebdca
  - >-
    Linux >= 5eef9ebec7f5738f12cadede3545c05b34bf5ac3 <
    588ccd19a6e69eca72d54608c3ab3b45709b2305
  - >-
    Linux >= ca54e904a071aa65ef3ad46ba42d51aaac6b73b4 <
    cf646a9f5554bc07d6ccb59c327812b3a0c6a368
  - >-
    Linux >= eb435d150ca74b4d40f77f1a2266f3636ed64a79 <
    9030a1bbe2c6b1e3e54cef462d159b5248f09fd2
  - >-
    Linux >= 1edc12d2bbcb7a8d0f1088e6fccb9d8c01bb1289 <
    bfdf412208fea7fc0d5b32d68a35b25261917393
  - >-
    Linux >= d89b74bf08f067b55c03d7f999ba0a0e73177eb3 <
    ba4c776af3dc21ed04e315e6545e99703bb1b53a
  - >-
    Linux >= 4527025d440ce84bf56e75ce1df2e84cb8178616 <
    ee08414d78b851e3d1856d6e4d631939b01a1bbe
  - >-
    Linux >= 4527025d440ce84bf56e75ce1df2e84cb8178616 <
    8265a626cc14a48e46e6dc8c47667e72b4232ac2
  - Linux 09143c0e8f3b03517e6233aad42f45c794d8df8e
  - Linux >= 5.10.253 < 5.10.270
  - Linux >= 5.15.203 < 5.15.221
  - Linux >= 6.1.168 < 6.1.188
  - Linux >= 6.6.131 < 6.6.157
  - Linux >= 6.12.80 < 6.12.110
  - Linux >= 6.18.21 < 6.18.52
  - Linux >= 6.19.11 < 6.20
  - Linux 7.0
published: '2026-09-17'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T18:17:47.140'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90224'
references:
  - url: 'https://git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bfdf412208fea7fc0d5b32d68a35b25261917393'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/cf646a9f5554bc07d6ccb59c327812b3a0c6a368'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ee08414d78b851e3d1856d6e4d631939b01a1bbe'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00357
epssPercentile: 0.26634
ingestedAt: '2026-09-17T16:21:47.854Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

nfc: nci: fix double completion race in nci_data_exchange_complete

nci_close_device() and nci_rx_work can both call
nci_data_exchange_complete() concurrently.  After commit 4527025d440ce8
("nfc: nci: fix circular locking dependency in nci_close_device") moved
flush_workqueue(ndev->rx_wq) after mutex_unlock(&ndev->req_lock),
rx_work is no longer serialized with the explicit completion call in the
close path.  Both callers read the non-NULL callback pointer and invoke
rawsock_data_exchange_complete(), which calls sock_put() -- but only one
sock_hold() was taken, so the second sock_put() underflows the refcount
and frees the socket while it is still in use.

Replace the bare clear_bit(NCI_DATA_EXCHANGE) with
test_and_clear_bit() so that only the first caller proceeds to invoke
the callback.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.