CVE-2025-37850 (GCVE-0-2025-37850)
Vulnerability from cvelistv5
Published
2025-05-09 06:41
Modified
2025-05-26 05:22
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config() With CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a divide-by-zero in the following line: do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); due to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate() returns zero. This is presumably just a theoretical problem: COMPILE_TEST overrides the dependency on RALINK which would select COMMON_CLK. Regardless it's a good idea to check for the error explicitly to avoid divide-by-zero. Fixes the following warning: drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section [ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]
Impacted products
Vendor Product Version
Linux Linux Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
Version: caf065f8fd583b43a3f95d84c8a0a0d07597963b
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{
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          "product": "Linux",
          "programFiles": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()\n\nWith CONFIG_COMPILE_TEST \u0026\u0026 !CONFIG_HAVE_CLK, pwm_mediatek_config() has a\ndivide-by-zero in the following line:\n\n\tdo_div(resolution, clk_get_rate(pc-\u003eclk_pwms[pwm-\u003ehwpwm]));\n\ndue to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate()\nreturns zero.\n\nThis is presumably just a theoretical problem: COMPILE_TEST overrides\nthe dependency on RALINK which would select COMMON_CLK.  Regardless it\u0027s\na good idea to check for the error explicitly to avoid divide-by-zero.\n\nFixes the following warning:\n\n  drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section\n\n[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-26T05:22:15.965Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8b9f60725d74b72c238e4437c957d0217746b506"
        },
        {
          "url": "https://git.kernel.org/stable/c/e1206d8e1651c9f62e5640b69b14d925b1a0a00a"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3e9cf266c2c103cf071e15d7a17e2c699fff3c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ddbec73ea2598d8414e8f7103241b55cf877010"
        },
        {
          "url": "https://git.kernel.org/stable/c/4cb15042b5f3ec0474e91cf379120cc597625dbb"
        },
        {
          "url": "https://git.kernel.org/stable/c/c343856ff2689ce0afef823592732fc178ef4aac"
        },
        {
          "url": "https://git.kernel.org/stable/c/77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b"
        },
        {
          "url": "https://git.kernel.org/stable/c/7ca59947b5fcf94e7ea4029d1bd0f7c41500a161"
        }
      ],
      "title": "pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-37850",
    "datePublished": "2025-05-09T06:41:57.784Z",
    "dateReserved": "2025-04-16T04:51:23.954Z",
    "dateUpdated": "2025-05-26T05:22:15.965Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-37850\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-05-09T07:16:05.887\",\"lastModified\":\"2025-05-12T17:32:52.810\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\npwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()\\n\\nWith CONFIG_COMPILE_TEST \u0026\u0026 !CONFIG_HAVE_CLK, pwm_mediatek_config() has a\\ndivide-by-zero in the following line:\\n\\n\\tdo_div(resolution, clk_get_rate(pc-\u003eclk_pwms[pwm-\u003ehwpwm]));\\n\\ndue to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate()\\nreturns zero.\\n\\nThis is presumably just a theoretical problem: COMPILE_TEST overrides\\nthe dependency on RALINK which would select COMMON_CLK.  Regardless it\u0027s\\na good idea to check for the error explicitly to avoid divide-by-zero.\\n\\nFixes the following warning:\\n\\n  drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section\\n\\n[ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pwm: mediatek: Evitar la divisi\u00f3n por cero en pwm_mediatek_config(). Con CONFIG_COMPILE_TEST y !CONFIG_HAVE_CLK, pwm_mediatek_config() presenta una divisi\u00f3n por cero en la siguiente l\u00ednea: do_div(resolution, clk_get_rate(pc-\u0026gt;clk_pwms[pwm-\u0026gt;hwpwm])); debido a que la versi\u00f3n !CONFIG_HAVE_CLK de clk_get_rate() devuelve cero. Se supone que se trata de un problema te\u00f3rico: COMPILE_TEST anula la dependencia de RALINK, que seleccionar\u00eda COMMON_CLK. En cualquier caso, es recomendable comprobar el error expl\u00edcitamente para evitar la divisi\u00f3n por cero. Corrige la siguiente advertencia: drivers/pwm/pwm-mediatek.o: advertencia: objtool: .text: final inesperado de secci\u00f3n [ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/4cb15042b5f3ec0474e91cf379120cc597625dbb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/77fb96dbe350e8a5ae4965ff9f6e7049f3966a6b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7ca59947b5fcf94e7ea4029d1bd0f7c41500a161\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8b9f60725d74b72c238e4437c957d0217746b506\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8ddbec73ea2598d8414e8f7103241b55cf877010\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c343856ff2689ce0afef823592732fc178ef4aac\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e1206d8e1651c9f62e5640b69b14d925b1a0a00a\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e3cf0c38d3ce754ad63005102fcfeb0b7ff3290b\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f3e9cf266c2c103cf071e15d7a17e2c699fff3c5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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