GHSA-PFXR-V75F-FXQ3
Vulnerability from github – Published: 2026-10-18 18:31 – Updated: 2026-10-30 15:33In 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.
{
"affected": [],
"aliases": [
"CVE-2026-98670"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-18T16:17:20Z",
"severity": null
},
"details": "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.",
"id": "GHSA-pfxr-v75f-fxq3",
"modified": "2026-10-30T15:33:55Z",
"published": "2026-10-18T18:31:58Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98670"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/012451d72c12293918617ff98cc737bedad21910"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/0f3f427076240e75ff265e61645627a71ca4918c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/49ea8a359e362bfbb32a647c8eb7962fbb37234e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/7958959ab2a906c04f783a3ffb979c45472ad647"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a29d385ad7b340c952a3935af2b33488db1eb3a6"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/a5fe2d1b55faba6d00fd87ad491b6cb603046304"
}
],
"schema_version": "1.4.0",
"severity": []
}
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