CVE-2026-98157 (GCVE-0-2026-98157)
Vulnerability from cvelistv5
Published
2026-09-25 10:36
Modified
2026-10-19 09:14
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation The poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned long, but the target field (poll_msec) is unsigned int. On 64-bit systems, a value > UINT_MAX is silently truncated when stored. Fix the mismatch by using kstrtouint() instead. This rejects values larger than UINT_MAX at parse time, making truncation impossible. Also add a check for value < 1 to reject the 0-delay case, which would cause the poll work to spin without delay and consume 100% CPU.
References
Impacted products
Vendor Product Version
Linux Linux Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
Version: e27e3dac651771fe3250f6305dee277bce29fc5d
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{
  "containers": {
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      "cpeApplicability": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nEDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation\n\nThe poll_msec sysfs store file uses simple_strtoul() which accepts an unsigned\nlong, but the target field (poll_msec) is unsigned int. On 64-bit systems,\na value \u003e UINT_MAX is silently truncated when stored.\n\nFix the mismatch by using kstrtouint() instead. This rejects values larger\nthan UINT_MAX at parse time, making truncation impossible. Also add a check\nfor value \u003c 1 to reject the 0-delay case, which would cause the poll work to\nspin without delay and consume 100% CPU."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:14:51.107Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/a60794ee3f453516ab3ed212ba0295ecf890bc8c"
        },
        {
          "url": "https://git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6"
        },
        {
          "url": "https://git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b"
        },
        {
          "url": "https://git.kernel.org/stable/c/541fc6f733b32463cf23277637bb07e2aaa00b53"
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        {
          "url": "https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327"
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          "url": "https://git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43"
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          "url": "https://git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af"
        },
        {
          "url": "https://git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645"
        }
      ],
      "title": "EDAC/device_sysfs: Use kstrtouint() for poll_msec to prevent truncation",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98157",
    "datePublished": "2026-09-25T10:36:27.009Z",
    "dateReserved": "2026-09-25T10:25:14.320Z",
    "dateUpdated": "2026-10-19T09:14:51.107Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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