spi: fix statistics allocation

{
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  "url": "https://osv.dev/vulnerability/CVE-2026-23475",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "spi: fix statistics allocation",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: spi: fix statistics allocation The controller per-cpu statistics is not allocated until after the controller has been registered with driver core, which leaves a window where accessing the sysfs attributes can trigger a NULL-pointer dereference. Fix this by moving the statistics allocation to controller allocation while tying its lifetime to that of the controller (rather than using implicit devres).",
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    "severity": "unknown",
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      "modified": "2026-10-28T02:30:52.769819930Z",
      "provider": "osv",
      "references": [
        "https://cert-portal.siemens.com/productcert/html/ssa-019113.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-082556.html",
        "https://cert-portal.siemens.com/productcert/html/ssa-457936.html",
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    "security_relevant": true,
    "severity_evidence": null
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  "source_id": "core-osv",
  "document_id": 521553,
  "published_at": "2026-04-03T15:15:54.211+00:00"
}