FKIE_CVE-2026-90224

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-10-19 09:19
Severity
7.5 (High) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
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 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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bfdf412208fea7fc0d5b32d68a35b25261917393
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf646a9f5554bc07d6ccb59c327812b3a0c6a368
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee08414d78b851e3d1856d6e4d631939b01a1bbe
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/nci/data.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3f075832734005310740d148d1cf1c1e792ebdca",
              "status": "affected",
              "version": "7ed00a3edc8597fe2333f524401e2889aa1b5edf",
              "versionType": "git"
            },
            {
              "lessThan": "588ccd19a6e69eca72d54608c3ab3b45709b2305",
              "status": "affected",
              "version": "5eef9ebec7f5738f12cadede3545c05b34bf5ac3",
              "versionType": "git"
            },
            {
              "lessThan": "cf646a9f5554bc07d6ccb59c327812b3a0c6a368",
              "status": "affected",
              "version": "ca54e904a071aa65ef3ad46ba42d51aaac6b73b4",
              "versionType": "git"
            },
            {
              "lessThan": "9030a1bbe2c6b1e3e54cef462d159b5248f09fd2",
              "status": "affected",
              "version": "eb435d150ca74b4d40f77f1a2266f3636ed64a79",
              "versionType": "git"
            },
            {
              "lessThan": "bfdf412208fea7fc0d5b32d68a35b25261917393",
              "status": "affected",
              "version": "1edc12d2bbcb7a8d0f1088e6fccb9d8c01bb1289",
              "versionType": "git"
            },
            {
              "lessThan": "ba4c776af3dc21ed04e315e6545e99703bb1b53a",
              "status": "affected",
              "version": "d89b74bf08f067b55c03d7f999ba0a0e73177eb3",
              "versionType": "git"
            },
            {
              "lessThan": "ee08414d78b851e3d1856d6e4d631939b01a1bbe",
              "status": "affected",
              "version": "4527025d440ce84bf56e75ce1df2e84cb8178616",
              "versionType": "git"
            },
            {
              "lessThan": "8265a626cc14a48e46e6dc8c47667e72b4232ac2",
              "status": "affected",
              "version": "4527025d440ce84bf56e75ce1df2e84cb8178616",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "09143c0e8f3b03517e6233aad42f45c794d8df8e",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.270",
              "status": "affected",
              "version": "5.10.253",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.221",
              "status": "affected",
              "version": "5.15.203",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.188",
              "status": "affected",
              "version": "6.1.168",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.157",
              "status": "affected",
              "version": "6.6.131",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.110",
              "status": "affected",
              "version": "6.12.80",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.52",
              "status": "affected",
              "version": "6.18.21",
              "versionType": "semver"
            },
            {
              "lessThan": "6.20",
              "status": "affected",
              "version": "6.19.11",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/nfc/nci/data.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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",
  "lastModified": "2026-10-19T09:19:12.647",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-17T17:17:17.997",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3f075832734005310740d148d1cf1c1e792ebdca"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/588ccd19a6e69eca72d54608c3ab3b45709b2305"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8265a626cc14a48e46e6dc8c47667e72b4232ac2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9030a1bbe2c6b1e3e54cef462d159b5248f09fd2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ba4c776af3dc21ed04e315e6545e99703bb1b53a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bfdf412208fea7fc0d5b32d68a35b25261917393"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cf646a9f5554bc07d6ccb59c327812b3a0c6a368"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ee08414d78b851e3d1856d6e4d631939b01a1bbe"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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