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CVE-2026-98157

Estado: En análisisSin puntuar—

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.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-98157",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "lessThan": "a60794ee3f453516ab3ed212ba0295ecf890bc8c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "lessThan": "f856511058c8cb470d6c6c7ce908870adcdc7dc6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "lessThan": "656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "lessThan": "541fc6f733b32463cf23277637bb07e2aaa00b53",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e27e3dac651771fe3250f6305dee277bce29fc5d",
              "lessThan": "ea01c061d839b520f385f112908de1c6e3391327",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "528052af901d6e6bbfa0e52362a70a58a5dd1e43",
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              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/edac/edac_device_sysfs.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.23"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.23",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/edac/edac_device_sysfs.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-25T11:17:47.397",
  "references": [
    {
      "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/541fc6f733b32463cf23277637bb07e2aaa00b53",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/656e2fe98ac452db4e5b8147d1f33b8c35b4ec4b",
      "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/a60794ee3f453516ab3ed212ba0295ecf890bc8c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ea01c061d839b520f385f112908de1c6e3391327",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f856511058c8cb470d6c6c7ce908870adcdc7dc6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Undergoing Analysis",
  "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 > 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 < 1 to reject the 0-delay case, which would cause the poll work to\nspin without delay and consume 100% CPU."
    }
  ],
  "lastModified": "2026-10-03T11:18:37.690",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}