clk: sunxi-ng: mp: Fix dual-divider clock rate readback

{
  "id": "2ac2ff5177eca9ba00d9eb7a225b9fdc4aa5a25904a143187766d893a71e7c94",
  "url": "https://osv.dev/vulnerability/CVE-2025-39954",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "clk: sunxi-ng: mp: Fix dual-divider clock rate readback",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: clk: sunxi-ng: mp: Fix dual-divider clock rate readback When dual-divider clock support was introduced, the P divider offset was left out of the .recalc_rate readback function. This causes the clock rate to become bogus or even zero (possibly due to the P divider being 1, leading to a divide-by-zero). Fix this by incorporating the P divider offset into the calculation.",
    "evidence": "osv:CVE-2025-39954",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.16.9",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2025-39954",
      "aliases": [
        "CVE-2025-39954"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "45717804b75eda8a76eacc04509ca4d68dd2caaf"
                },
                {
                  "fixed": "40108f69c372af3aea73e7829d6849a44638d662"
                },
                {
                  "fixed": "25fbbaf515acd13399589bd5ee6de5f35740cef2"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39954.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.15.0"
                },
                {
                  "fixed": "6.16.9"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-39954.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:26.194604655Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/25fbbaf515acd13399589bd5ee6de5f35740cef2",
        "https://git.kernel.org/stable/c/40108f69c372af3aea73e7829d6849a44638d662",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/39xxx/CVE-2025-39954.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-39954",
        "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/2025/39xxx/CVE-2025-39954.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-39954",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 492998,
  "published_at": "2025-10-09T09:47:32.825+00:00"
}