FKIE_CVE-2026-98157

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/edac/edac_device_sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ea01c061d839b520f385f112908de1c6e3391327",
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "versionType": "git"
            },
            {
              "lessThan": "528052af901d6e6bbfa0e52362a70a58a5dd1e43",
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "versionType": "git"
            },
            {
              "lessThan": "0e022ee4f8e0dc843ba4c80bb75408a7704279af",
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "versionType": "git"
            },
            {
              "lessThan": "66cc9dec919dd63d8e4b3d386f7aed3ae684e645",
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/edac/edac_device_sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "lessThan": "2.6.23",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-98157",
  "lastModified": "2026-09-25T11:17:47.397",
  "metrics": {},
  "published": "2026-09-25T11:17:47.397",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0e022ee4f8e0dc843ba4c80bb75408a7704279af"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/528052af901d6e6bbfa0e52362a70a58a5dd1e43"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/66cc9dec919dd63d8e4b3d386f7aed3ae684e645"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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