drm/amd/display: fix FCLK pstate change underflow

{
  "id": "ffc3899f2d737864a19f00e06d6ffca7982ee2169e54e5e4cf287f5e0900c27e",
  "url": "https://osv.dev/vulnerability/CVE-2023-53780",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/amd/display: fix FCLK pstate change underflow",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix FCLK pstate change underflow [Why] Currently we set FCLK p-state change watermark calculated based on dummy p-state latency when UCLK p-state is not supported [How] Calculate FCLK p-state change watermark based on on FCLK pstate change latency in case UCLK p-state is not supported",
    "evidence": "osv:CVE-2023-53780",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "6.1.16",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.2.3",
            "evidence": "/affected/1/ranges"
          }
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        "affected_versions": []
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    "severity": "unknown",
    "structured": {
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      "aliases": [
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          "ranges": [
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              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "4.15.0"
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                {
                  "fixed": "6.1.16"
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            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "6.2.0"
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            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53780.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.275893073Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/4bdfa48d74649898468a0bf5c8b8a48dded77b4a",
        "https://git.kernel.org/stable/c/6853d56dba56d1c24db403ff3885c71e18d572c4",
        "https://git.kernel.org/stable/c/972243f973eb0821084e5833d5f7f4ed025f42da",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/53xxx/CVE-2023-53780.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-53780",
        "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/2023/53xxx/CVE-2023-53780.json"
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    "related_cves": [
      {
        "value": "CVE-2023-53780",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
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  "source_id": "core-osv",
  "document_id": 493024,
  "published_at": "2025-12-09T00:00:35.925+00:00"
}