CVE-2026-23372 (GCVE-0-2026-23372)
Vulnerability from cvelistv5
Published
2026-03-25 10:27
Modified
2026-04-18 08:58
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: nfc: rawsock: cancel tx_work before socket teardown In rawsock_release(), cancel any pending tx_work and purge the write queue before orphaning the socket. rawsock_tx_work runs on the system workqueue and calls nfc_data_exchange which dereferences the NCI device. Without synchronization, tx_work can race with socket and device teardown when a process is killed (e.g. by SIGKILL), leading to use-after-free or leaked references. Set SEND_SHUTDOWN first so that if tx_work is already running it will see the flag and skip transmitting, then use cancel_work_sync to wait for any in-progress execution to finish, and finally purge any remaining queued skbs.
References
Impacted products
Vendor Product Version
Linux Linux Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
Version: 23b7869c0fd08d73c9f83a2db88a13312d6198bb
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{
  "containers": {
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          "product": "Linux",
          "programFiles": [
            "net/nfc/rawsock.c"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: rawsock: cancel tx_work before socket teardown\n\nIn rawsock_release(), cancel any pending tx_work and purge the write\nqueue before orphaning the socket.  rawsock_tx_work runs on the system\nworkqueue and calls nfc_data_exchange which dereferences the NCI\ndevice.  Without synchronization, tx_work can race with socket and\ndevice teardown when a process is killed (e.g. by SIGKILL), leading\nto use-after-free or leaked references.\n\nSet SEND_SHUTDOWN first so that if tx_work is already running it will\nsee the flag and skip transmitting, then use cancel_work_sync to wait\nfor any in-progress execution to finish, and finally purge any\nremaining queued skbs."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-18T08:58:18.823Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9b2d23cd09e1cb56bdf0e4d5614703094159f16c"
        },
        {
          "url": "https://git.kernel.org/stable/c/cdeed45ce8c92defd057f7d67ee9a69374d8fa16"
        },
        {
          "url": "https://git.kernel.org/stable/c/3ae592ed91bb4b6b51df256b51045c13d2656049"
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        {
          "url": "https://git.kernel.org/stable/c/722a28b635ec281bb08a23885223526d8e7d6526"
        },
        {
          "url": "https://git.kernel.org/stable/c/78141b8832e16d80d09cbefb4258612db0777a24"
        },
        {
          "url": "https://git.kernel.org/stable/c/edc988613def90c5b558e025b1b423f48007be06"
        },
        {
          "url": "https://git.kernel.org/stable/c/da4515fc8263c5933ed605e396af91079806dc45"
        },
        {
          "url": "https://git.kernel.org/stable/c/d793458c45df2aed498d7f74145eab7ee22d25aa"
        }
      ],
      "title": "nfc: rawsock: cancel tx_work before socket teardown",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23372",
    "datePublished": "2026-03-25T10:27:53.308Z",
    "dateReserved": "2026-01-13T15:37:46.003Z",
    "dateUpdated": "2026-04-18T08:58:18.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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