Vulnerability-Lookup

GHSA-MRH8-MP34-58PV

Vulnerability from github – Published: 2026-07-25 12:31 – Updated: 2026-07-25 12:31

Details

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

iio: chemical: scd30: Cleanup initializations and fix sign-extension bug

Include linux/bitfield.h for FIELD_GET().

Create new macros for bit manipulation in combination with manual bit manipulation being replaced with FIELD_GET().

The current variable declaration and initializations are barely readable and use comma separations across multiple lines. Refactor the initializations so that mantissa and exp have separate declarations and sign gets initialized later.

In addition (and due to the nature of the cleanup), fix a sign-extension bug where, float32 would get bitwise anded with ~BIT(31) (which is 0xFFFFFFFF7FFFFFFF) which corrupted the exponent.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-64497"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:35Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: chemical: scd30: Cleanup initializations and fix sign-extension bug\n\nInclude linux/bitfield.h for FIELD_GET().\n\nCreate new macros for bit manipulation in combination with manual bit\nmanipulation being replaced with FIELD_GET().\n\nThe current variable declaration and initializations are barely readable\nand use comma separations across multiple lines. Refactor the\ninitializations so that mantissa and exp have separate declarations and\nsign gets initialized later.\n\nIn addition (and due to the nature of the cleanup), fix a sign-extension\nbug where, float32 would get bitwise anded with ~BIT(31)\n(which is 0xFFFFFFFF7FFFFFFF) which corrupted the exponent.",
  "id": "GHSA-mrh8-mp34-58pv",
  "modified": "2026-07-25T12:31:38Z",
  "published": "2026-07-25T12:31:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64497"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ccff849bde90973e6c13a666f6ceab5c55b30d4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1821bcacd8ac5b214c53be16cbb8172bf193f0b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/40bb0fdb37f441c9c9f52bf58bbd8a0ca3cc9598"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60d877910a43c305b5165131b258a17b1d772d57"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82accdd57404399eddf3d56fd9beda7c61307388"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8d4a46e971cf846bda98b20d4cabfa21c1276e5f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b131f0011dfef72350f4e3f11df94dc3e6b46065"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d49ff54b2784aa56a7c97982de713604de89d23a"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-64497 (GCVE-0-2026-64497)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:51 – Updated: 2026-07-25 08:51

Title

iio: chemical: scd30: Cleanup initializations and fix sign-extension bug

Summary

In the Linux kernel, the following vulnerability has been resolved: iio: chemical: scd30: Cleanup initializations and fix sign-extension bug Include linux/bitfield.h for FIELD_GET(). Create new macros for bit manipulation in combination with manual bit manipulation being replaced with FIELD_GET(). The current variable declaration and initializations are barely readable and use comma separations across multiple lines. Refactor the initializations so that mantissa and exp have separate declarations and sign gets initialized later. In addition (and due to the nature of the cleanup), fix a sign-extension bug where, float32 would get bitwise anded with ~BIT(31) (which is 0xFFFFFFFF7FFFFFFF) which corrupted the exponent.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0ccff849bde90973e…
https://git.kernel.org/stable/c/1821bcacd8ac5b214…
https://git.kernel.org/stable/c/40bb0fdb37f441c9c…
https://git.kernel.org/stable/c/b131f0011dfef7235…
https://git.kernel.org/stable/c/8d4a46e971cf846bd…
https://git.kernel.org/stable/c/82accdd57404399ed…
https://git.kernel.org/stable/c/d49ff54b2784aa56a…
https://git.kernel.org/stable/c/60d877910a43c305b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 0ccff849bde90973e6c13a666f6ceab5c55b30d4 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 1821bcacd8ac5b214c53be16cbb8172bf193f0b6 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 40bb0fdb37f441c9c9f52bf58bbd8a0ca3cc9598 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < b131f0011dfef72350f4e3f11df94dc3e6b46065 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 8d4a46e971cf846bda98b20d4cabfa21c1276e5f (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 82accdd57404399eddf3d56fd9beda7c61307388 (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < d49ff54b2784aa56a7c97982de713604de89d23a (git) Affected: 64b3d8b1b0f5c16c19045785e4da8391ae35ec99 , < 60d877910a43c305b5165131b258a17b1d772d57 (git)
Linux	Linux	Affected: 5.9 Unaffected: 0 , < 5.9 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.96 , ≤ 6.12.* (semver) Unaffected: 6.18.39 , ≤ 6.18.* (semver) Unaffected: 7.1.4 , ≤ 7.1.* (semver) Unaffected: 7.2-rc1 , ≤ * (original_commit_for_fix)

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{
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        {
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          "programFiles": [
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              "status": "affected",
              "version": "5.9"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
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              "status": "unaffected",
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              "versionType": "semver"
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            {
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              "status": "unaffected",
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              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.96",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.39",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
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              "version": "7.2-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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        {
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      "title": "iio: chemical: scd30: Cleanup initializations and fix sign-extension bug",
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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.

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.

Action not permitted

GHSA-MRH8-MP34-58PV

CVE-2026-64497 (GCVE-0-2026-64497)

Tags

Sightings

Nomenclature