drm/panfrost: Fix GEM handle creation ref-counting

{
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  "url": "https://osv.dev/vulnerability/CVE-2022-50417",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/panfrost: Fix GEM handle creation ref-counting",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/panfrost: Fix GEM handle creation ref-counting panfrost_gem_create_with_handle() previously returned a BO but with the only reference being from the handle, which user space could in theory guess and release, causing a use-after-free. Additionally if the call to panfrost_gem_mapping_get() in panfrost_ioctl_create_bo() failed then a(nother) reference on the BO was dropped. The _create_with_handle() is a problematic pattern, so ditch it and instead create the handle in panfrost_ioctl_create_bo(). If the call to panfrost_gem_mapping_get() fails then this means that user space has indeed gone behind our back and freed the handle. In which case just return an error code.",
    "evidence": "osv:CVE-2022-50417",
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      "modified": "2026-10-28T02:30:25.718921426Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0b70f6ea4d4f2b4d4b291d86ab76b4d07394932c",
        "https://git.kernel.org/stable/c/3f9feffa8a5ab08b4e298a27b1aa7204a7d42ca2",
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        "https://git.kernel.org/stable/c/ba3d2c2380e7129b525a787489c0b7e819a3b898",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/50xxx/CVE-2022-50417.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-50417",
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  "source_id": "core-osv",
  "document_id": 492260,
  "published_at": "2025-09-18T16:04:00.512+00:00"
}