CVE-2025-39954 (GCVE-0-2025-39954)
Vulnerability from cvelistv5
Published
2025-10-09 09:47
Modified
2025-10-09 09:47
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 45717804b75eda8a76eacc04509ca4d68dd2caaf
Version: 45717804b75eda8a76eacc04509ca4d68dd2caaf
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/clk/sunxi-ng/ccu_mp.c"
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                  "versionStartIncluding": "6.15",
                  "vulnerable": true
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      "descriptions": [
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nclk: sunxi-ng: mp: Fix dual-divider clock rate readback\n\nWhen dual-divider clock support was introduced, the P divider offset was\nleft out of the .recalc_rate readback function. This causes the clock\nrate to become bogus or even zero (possibly due to the P divider being\n1, leading to a divide-by-zero).\n\nFix this by incorporating the P divider offset into the calculation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-09T09:47:32.825Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/40108f69c372af3aea73e7829d6849a44638d662"
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        {
          "url": "https://git.kernel.org/stable/c/25fbbaf515acd13399589bd5ee6de5f35740cef2"
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      "title": "clk: sunxi-ng: mp: Fix dual-divider clock rate readback",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-39954",
    "datePublished": "2025-10-09T09:47:32.825Z",
    "dateReserved": "2025-04-16T07:20:57.149Z",
    "dateUpdated": "2025-10-09T09:47:32.825Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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  }
}


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