drm/sun4i: backend: fix error pointer dereference

{
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  "url": "https://osv.dev/vulnerability/CVE-2026-53066",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/sun4i: backend: fix error pointer dereference",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/sun4i: backend: fix error pointer dereference The function drm_atomic_get_plane_state() can return an error pointer and is not checked for it. Add error pointer check. Detected by Smatch: drivers/gpu/drm/sun4i/sun4i_backend.c:496 sun4i_backend_atomic_check() error: 'plane_state' dereferencing possible ERR_PTR()",
    "evidence": "osv:CVE-2026-53066",
    "products": [
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      "modified": "2026-10-28T02:30:22.260124279Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/06277983eca4a31d3c2114fa33d99a6e82484b11",
        "https://git.kernel.org/stable/c/47038159c559824f4dbfb5b0d87b9b3416663372",
        "https://git.kernel.org/stable/c/779c2f10743fc021f2f0ebe2b188cadfb973c5e4",
        "https://git.kernel.org/stable/c/cf615b90a11a39a28e313be5e508e94bcde72016",
        "https://git.kernel.org/stable/c/e9bef62f1bb9fcb38223730657af20f4c6283c16",
        "https://git.kernel.org/stable/c/ea51fd96aca01381e8f1ac0c671a57b7619193bb",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53066.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-53066",
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    "security_relevant": true,
    "severity_evidence": null
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  "source_id": "core-osv",
  "document_id": 488421,
  "published_at": "2026-06-24T16:30:08.824+00:00"
}