Vulnerability-Lookup

GHSA-63GC-R7WC-MRXQ

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: chemical: scd30: fix division by zero in write_raw

Add a zero check for val2 before using it as a divisor when setting the sampling frequency. A user writing a zero fractional part to the sampling_frequency sysfs attribute triggers a division by zero in the kernel.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-63931"
  ],
  "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: chemical: scd30: fix division by zero in write_raw\n\nAdd a zero check for val2 before using it as a divisor when setting the\nsampling frequency. A user writing a zero fractional part to the\nsampling_frequency sysfs attribute triggers a division by zero in the\nkernel.",
  "id": "GHSA-63gc-r7wc-mrxq",
  "modified": "2026-07-19T18:31:46Z",
  "published": "2026-07-19T18:31:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63931"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2c50c017df97bfb425038efdfb8514c7bcd08564"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4748bce423a363bb8a85a624faeb8f54fe331611"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5aba4f94b225617a55fed442a70329b2ee19c0a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5e4d34092a5ebfbc3a45a180c76ecb1cdbbedd53"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6308b812acdcac38cbfe1af0b1524c3375f408a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c7a740bf75554b051fabb17596ca6e483d6e6d90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d98c2e69aab905d1b19a69ffe584efa46a9efd42"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e85bc501947f5ae16dd9adc01162b76d55ab7962"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-63931 (GCVE-0-2026-63931)

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

Title

iio: chemical: scd30: fix division by zero in write_raw

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: chemical: scd30: fix division by zero in write_raw Add a zero check for val2 before using it as a divisor when setting the sampling frequency. A user writing a zero fractional part to the sampling_frequency sysfs attribute triggers a division by zero in the kernel.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/4748bce423a363bb8…
https://git.kernel.org/stable/c/6308b812acdcac38c…
https://git.kernel.org/stable/c/c7a740bf75554b051…
https://git.kernel.org/stable/c/e85bc501947f5ae16…
https://git.kernel.org/stable/c/d98c2e69aab905d1b…
https://git.kernel.org/stable/c/5e4d34092a5ebfbc3…
https://git.kernel.org/stable/c/2c50c017df97bfb42…
https://git.kernel.org/stable/c/5aba4f94b225617a5…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 4748bce423a363bb8a85a624faeb8f54fe331611 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 6308b812acdcac38cbfe1af0b1524c3375f408a5 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < c7a740bf75554b051fabb17596ca6e483d6e6d90 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < e85bc501947f5ae16dd9adc01162b76d55ab7962 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < d98c2e69aab905d1b19a69ffe584efa46a9efd42 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 5e4d34092a5ebfbc3a45a180c76ecb1cdbbedd53 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 2c50c017df97bfb425038efdfb8514c7bcd08564 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 5aba4f94b225617a55fed442a70329b2ee19c0a5 (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.93 , ≤ 6.12.* (semver) Unaffected: 6.18.35 , ≤ 6.18.* (semver) Unaffected: 7.0.12 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
            "drivers/iio/chemical/scd30_core.c"
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              "version": "5.9"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
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              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.93",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.35",
              "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": [
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          "nodes": [
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        }
      ],
      "providerMetadata": {
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    "state": "PUBLISHED"
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}

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.

Action not permitted

GHSA-63GC-R7WC-MRXQ

CVE-2026-63931 (GCVE-0-2026-63931)

Tags

Sightings

Nomenclature