CVE-2026-98678

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.17 %higher than 5% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

In the Linux kernel, the following vulnerability has been resolved:

iio: adc: ad4030: fix invalid oversampling_ratio validation

In ad4030_set_avg_frame_len(), the logarithm is calculated before input validation. Passing zero or negative values leads to an undefined result from ilog2().

Validate that the input is strictly positive prior to computing its logarithm.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.17 %
Percentile among all scored CVEs: 5
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 3 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98678",
  "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": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4",
              "lessThan": "6b0cc4e32599f59c994a60743f53fc72cb2979f4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4",
              "lessThan": "6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "949abd1ca5a4342d9fb8c774035222e65dd1cfe4",
              "lessThan": "d615210564205993e8f0e7ccb57cc2e66b7d5706",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/iio/adc/ad4030.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/iio/adc/ad4030.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:21.160",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6b0cc4e32599f59c994a60743f53fc72cb2979f4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6ca6dcbaa68c5e6dc4df171a32c5822e1a4c66c1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d615210564205993e8f0e7ccb57cc2e66b7d5706",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: ad4030: fix invalid oversampling_ratio validation\n\nIn ad4030_set_avg_frame_len(), the logarithm is calculated before input\nvalidation. Passing zero or negative values leads to an undefined result\nfrom ilog2().\n\nValidate that the input is strictly positive prior to computing its\nlogarithm."
    }
  ],
  "lastModified": "2026-10-19T10:19:32.267",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}