parisc: Fix locking in pdc_iodc_print() firmware call

{
  "id": "ab085c0606c5990763c6a288db1101c0fe1b56b4fea6ee479b5a8c2b91af7299",
  "url": "https://osv.dev/vulnerability/CVE-2022-50518",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "parisc: Fix locking in pdc_iodc_print() firmware call",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: parisc: Fix locking in pdc_iodc_print() firmware call Utilize pdc_lock spinlock to protect parallel modifications of the iodc_dbuf[] buffer, check length to prevent buffer overflow of iodc_dbuf[], drop the iodc_retbuf[] buffer and fix some wrong indentings.",
    "evidence": "osv:CVE-2022-50518",
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    "severity": "high",
    "structured": {
      "id": "CVE-2022-50518",
      "aliases": [
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      "metrics": [
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          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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      "modified": "2026-10-28T02:30:46.169175409Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/04a603058e70b8b881bb7860b8bd649f931f2591",
        "https://git.kernel.org/stable/c/553bc5890ed96a8d006224c3a4673c47fee0d12a",
        "https://git.kernel.org/stable/c/7236aae5f81f3efbd93d0601e74fc05994bc2580",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50518.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50518",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50518.json"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 514022,
  "published_at": "2025-10-07T15:19:13.04+00:00"
}