RDMA/erdma: Fix refcount leak in erdma_mmap

{
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  "url": "https://osv.dev/vulnerability/CVE-2022-50874",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RDMA/erdma: Fix refcount leak in erdma_mmap",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Fix refcount leak in erdma_mmap rdma_user_mmap_entry_get() take reference, we should release it when not need anymore, add the missing rdma_user_mmap_entry_put() in the error path to fix it.",
    "evidence": "osv:CVE-2022-50874",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
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        "prerequisites": [],
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    "severity": "unknown",
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              "type": "ECOSYSTEM",
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      ],
      "modified": "2026-10-28T02:30:22.351225190Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/410f0f46ffca4d0102470c1e0c747ecfece4204c",
        "https://git.kernel.org/stable/c/8372207b009d6abdd60bb05624640bd86386599f",
        "https://git.kernel.org/stable/c/ee84146c05ad2316b9a7222d0ec4413e0bf30eeb",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50874.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50874",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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    "security_relevant": true,
    "severity_evidence": null
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  "source_id": "core-osv",
  "document_id": 488782,
  "published_at": "2025-12-30T12:23:15.388+00:00"
}