CVE-2026-98670 (GCVE-0-2026-98670)
Vulnerability from cvelistv5
Published
2026-10-18 15:45
Modified
2026-10-21 12:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: iio: adc: xilinx-xadc: free IRQ before cancelling the unmask worker on unbind The ZYNQ XADC alarm IRQ handler queues zynq_unmask_work via schedule_delayed_work(); that work is cleared by a devm callback. Register the devm callback before devm_request_irq() so the devres LIFO teardown frees the IRQ first, ensuring the handler can no longer queue work by the time the workqueue is cleared. Otherwise the handler could re-arm the work and run it after the xadc structure has been freed. This issue was found by an in-house static analysis tool.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2a9685d1a3b7644ca08d8355fc238b43faef7c3e
Version: 2a9685d1a3b7644ca08d8355fc238b43faef7c3e
Version: 2a9685d1a3b7644ca08d8355fc238b43faef7c3e
Version: 2a9685d1a3b7644ca08d8355fc238b43faef7c3e
Version: 2a9685d1a3b7644ca08d8355fc238b43faef7c3e
Version: e96eb8853f334f96312968e4f01c5a452db54c00
Version: 5.10.200   ≤
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: xilinx-xadc: free IRQ before cancelling the unmask worker on unbind\n\nThe ZYNQ XADC alarm IRQ handler queues zynq_unmask_work via\nschedule_delayed_work(); that work is cleared by a devm callback.\nRegister the devm callback before devm_request_irq() so the devres LIFO\nteardown frees the IRQ first, ensuring the handler can no longer queue\nwork by the time the workqueue is cleared. Otherwise the handler could\nre-arm the work and run it after the xadc structure has been freed.\n\nThis issue was found by an in-house static analysis tool."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-21T12:55:34.752Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/012451d72c12293918617ff98cc737bedad21910"
        },
        {
          "url": "https://git.kernel.org/stable/c/a29d385ad7b340c952a3935af2b33488db1eb3a6"
        },
        {
          "url": "https://git.kernel.org/stable/c/a5fe2d1b55faba6d00fd87ad491b6cb603046304"
        },
        {
          "url": "https://git.kernel.org/stable/c/49ea8a359e362bfbb32a647c8eb7962fbb37234e"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f3f427076240e75ff265e61645627a71ca4918c"
        }
      ],
      "title": "iio: adc: xilinx-xadc: free IRQ before cancelling the unmask worker on unbind",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98670",
    "datePublished": "2026-10-18T15:45:14.810Z",
    "dateReserved": "2026-09-25T10:25:14.363Z",
    "dateUpdated": "2026-10-21T12:55:34.752Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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