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GHSA-PH67-42MQ-JPW6

Vulnerability from github – Published: 2026-07-19 18:31 – Updated: 2026-07-19 18:31

Details

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

iio: adc: nxp-sar-adc: fix division by zero in write_raw

Add a validation check for the sampling frequency value before using it as a divisor. A user writing zero or a negative value to the sampling_frequency sysfs attribute triggers a division by zero in the kernel.

Also prevent unsigned integer underflow when the computed cycle count is smaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to a huge value.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63935"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T16:17:11Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: nxp-sar-adc: fix division by zero in write_raw\n\nAdd a validation check for the sampling frequency value before using it\nas a divisor. A user writing zero or a negative value to the\nsampling_frequency sysfs attribute triggers a division by zero in the\nkernel.\n\nAlso prevent unsigned integer underflow when the computed cycle count is\nsmaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to\na huge value.",
  "id": "GHSA-ph67-42mq-jpw6",
  "modified": "2026-07-19T18:31:46Z",
  "published": "2026-07-19T18:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63935"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a9aba21a539c668a66b58eeb08ad3909e5a54c2a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb6ea15e7d3c7518f806975a06b7d4c0a26402ea"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63935 (GCVE-0-2026-63935)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:55 – Updated: 2026-07-19 14:55

Title

iio: adc: nxp-sar-adc: fix division by zero in write_raw

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: adc: nxp-sar-adc: fix division by zero in write_raw Add a validation check for the sampling frequency value before using it as a divisor. A user writing zero or a negative value to the sampling_frequency sysfs attribute triggers a division by zero in the kernel. Also prevent unsigned integer underflow when the computed cycle count is smaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to a huge value.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/cb6ea15e7d3c7518f…
https://git.kernel.org/stable/c/a9aba21a539c668a6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4434072a893e4864519c167947083ff3e4cc2d95 , < cb6ea15e7d3c7518f806975a06b7d4c0a26402ea (git) Affected: 4434072a893e4864519c167947083ff3e4cc2d95 , < a9aba21a539c668a66b58eeb08ad3909e5a54c2a (git)
Linux	Linux	Affected: 7.0 Unaffected: 0 , < 7.0 (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iio/adc/nxp-sar-adc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cb6ea15e7d3c7518f806975a06b7d4c0a26402ea",
              "status": "affected",
              "version": "4434072a893e4864519c167947083ff3e4cc2d95",
              "versionType": "git"
            },
            {
              "lessThan": "a9aba21a539c668a66b58eeb08ad3909e5a54c2a",
              "status": "affected",
              "version": "4434072a893e4864519c167947083ff3e4cc2d95",
              "versionType": "git"
            }
          ]
        },
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.12",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.12",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "7.0",
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                }
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      "descriptions": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: nxp-sar-adc: fix division by zero in write_raw\n\nAdd a validation check for the sampling frequency value before using it\nas a divisor. A user writing zero or a negative value to the\nsampling_frequency sysfs attribute triggers a division by zero in the\nkernel.\n\nAlso prevent unsigned integer underflow when the computed cycle count is\nsmaller than NXP_SAR_ADC_CONV_TIME, which would wrap the u32 inpsamp to\na huge value."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:55:33.321Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/cb6ea15e7d3c7518f806975a06b7d4c0a26402ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/a9aba21a539c668a66b58eeb08ad3909e5a54c2a"
        }
      ],
      "title": "iio: adc: nxp-sar-adc: fix division by zero in write_raw",
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        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63935",
    "datePublished": "2026-07-19T14:55:33.321Z",
    "dateReserved": "2026-07-19T07:54:57.022Z",
    "dateUpdated": "2026-07-19T14:55:33.321Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-PH67-42MQ-JPW6

CVE-2026-63935 (GCVE-0-2026-63935)

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