CVE-2025-21817 (GCVE-0-2025-21817)
Vulnerability from cvelistv5
Published
2025-02-27 20:04
Modified
2025-06-19 12:56
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: block: mark GFP_NOIO around sysfs ->store() sysfs ->store is called with queue freezed, meantime we have several ->store() callbacks(update_nr_requests, wbt, scheduler) to allocate memory with GFP_KERNEL which may run into direct reclaim code path, then potential deadlock can be caused. Fix the issue by marking NOIO around sysfs ->store()
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2566ce907e5d5db8a039647208e029ce559baa31
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c
Impacted products
Vendor Product Version
Linux Linux Version: 8985da5481562e96b95e94ed8e5cc9b6565eb82b
Version: c99f66e4084a62a2cc401c4704a84328aeddc9ec
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   Linux Linux Version: 6.13.2   ≤
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          "programFiles": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: mark GFP_NOIO around sysfs -\u003estore()\n\nsysfs -\u003estore is called with queue freezed, meantime we have several\n-\u003estore() callbacks(update_nr_requests, wbt, scheduler) to allocate\nmemory with GFP_KERNEL which may run into direct reclaim code path,\nthen potential deadlock can be caused.\n\nFix the issue by marking NOIO around sysfs -\u003estore()"
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      "providerMetadata": {
        "dateUpdated": "2025-06-19T12:56:45.920Z",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-21817",
    "datePublished": "2025-02-27T20:04:15.988Z",
    "dateReserved": "2024-12-29T08:45:45.774Z",
    "dateUpdated": "2025-06-19T12:56:45.920Z",
    "state": "PUBLISHED"
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  }
}


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