Vulnerability-Lookup

CVE-2026-64275 (GCVE-0-2026-64275)

Vulnerability from cvelistv5 – Published: 2026-07-25 08:49 – Updated: 2026-07-25 08:49

Title

Input: elan_i2c - prevent division by zero and arithmetic underflow

Summary

In the Linux kernel, the following vulnerability has been resolved: Input: elan_i2c - prevent division by zero and arithmetic underflow The Elan I2C touchpad driver queries the device for its physical dimensions and trace counts to calculate the device resolution and width. However, if the device firmware or device tree provides invalid zero values for x_traces or y_traces, it results in a fatal division-by-zero exception leading to a kernel panic during device probe. Add checks to ensure these parameters are non-zero before performing the division. If invalid trace values are detected, fall back to a safe default of 1. Additionally, prevent an arithmetic underflow in the touch reporting logic. Previously, if the calculated or fallback width was smaller than ETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a massive unsigned integer being reported to userspace. Clamp the adjusted width to a minimum of 0 to safely handle small physical dimensions and fallback scenarios. Completing the probe with safe fallback values ensures the sysfs nodes are created, keeping the firmware update path intact so a recovery firmware can be flashed to the device.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/59d4cc5e7a9785e4b…
https://git.kernel.org/stable/c/f6d10af2036d1d4a8…
https://git.kernel.org/stable/c/2f281ff0163a38fdc…
https://git.kernel.org/stable/c/8c1db3418a419e788…
https://git.kernel.org/stable/c/feb4866a42ec94764…
https://git.kernel.org/stable/c/01e0317c256c560d8…
https://git.kernel.org/stable/c/6bac57d8fe2a077b8…
https://git.kernel.org/stable/c/df2b818fa009c10ff…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < 59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < f6d10af2036d1d4a847a74fe47ebbf93bce3c84c (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < 2f281ff0163a38fdc4cb4061f0c241e643283a5e (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < 8c1db3418a419e788691746b9c47f863c2fd4890 (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < feb4866a42ec94764c7eb58012256f6f37664727 (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < 01e0317c256c560d8dcce2e9825eb6142ee34611 (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < 6bac57d8fe2a077b8a85b4140eeb7999078158eb (git) Affected: 6696777c6506fa52b2a0282121195843ed855be6 , < df2b818fa009c10ff6ba875a1663ff001cda9558 (git)
Linux	Linux	Affected: 3.19 Unaffected: 0 , < 3.19 (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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JSON

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If invalid trace values are detected, fall back to a safe\\ndefault of 1.\\n\\nAdditionally, prevent an arithmetic underflow in the touch reporting\\nlogic. Previously, if the calculated or fallback width was smaller than\\nETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a\\nmassive unsigned integer being reported to userspace. Clamp the adjusted\\nwidth to a minimum of 0 to safely handle small physical dimensions and\\nfallback scenarios.\\n\\nCompleting the probe with safe fallback values ensures the sysfs nodes\\nare created, keeping the firmware update path intact so a recovery\\nfirmware can be flashed to the device.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/input/mouse/elan_i2c_core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"f6d10af2036d1d4a847a74fe47ebbf93bce3c84c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"2f281ff0163a38fdc4cb4061f0c241e643283a5e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"8c1db3418a419e788691746b9c47f863c2fd4890\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"feb4866a42ec94764c7eb58012256f6f37664727\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"01e0317c256c560d8dcce2e9825eb6142ee34611\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"6bac57d8fe2a077b8a85b4140eeb7999078158eb\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"6696777c6506fa52b2a0282121195843ed855be6\",\"lessThan\":\"df2b818fa009c10ff6ba875a1663ff001cda9558\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/input/mouse/elan_i2c_core.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.19\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.19\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.96\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.39\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.4\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01e0317c256c560d8dcce2e9825eb6142ee34611\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2f281ff0163a38fdc4cb4061f0c241e643283a5e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6bac57d8fe2a077b8a85b4140eeb7999078158eb\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8c1db3418a419e788691746b9c47f863c2fd4890\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/df2b818fa009c10ff6ba875a1663ff001cda9558\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/feb4866a42ec94764c7eb58012256f6f37664727\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-07-25T16:46:48Z",
      "cve": "CVE-2026-64275",
      "id": "CVE-2026-64275",
      "initial_release_date": "2026-07-25T16:46:48Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-64275",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-64275.json",
      "version": "2"
    }
  }
}

GHSA-742P-Q3M8-X43J

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:

Input: elan_i2c - prevent division by zero and arithmetic underflow

The Elan I2C touchpad driver queries the device for its physical dimensions and trace counts to calculate the device resolution and width. However, if the device firmware or device tree provides invalid zero values for x_traces or y_traces, it results in a fatal division-by-zero exception leading to a kernel panic during device probe.

Add checks to ensure these parameters are non-zero before performing the division. If invalid trace values are detected, fall back to a safe default of 1.

Additionally, prevent an arithmetic underflow in the touch reporting logic. Previously, if the calculated or fallback width was smaller than ETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a massive unsigned integer being reported to userspace. Clamp the adjusted width to a minimum of 0 to safely handle small physical dimensions and fallback scenarios.

Completing the probe with safe fallback values ensures the sysfs nodes are created, keeping the firmware update path intact so a recovery firmware can be flashed to the device.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-64275"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-25T10:17:07Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: elan_i2c - prevent division by zero and arithmetic underflow\n\nThe Elan I2C touchpad driver queries the device for its physical\ndimensions and trace counts to calculate the device resolution and width.\nHowever, if the device firmware or device tree provides invalid zero\nvalues for x_traces or y_traces, it results in a fatal division-by-zero\nexception leading to a kernel panic during device probe.\n\nAdd checks to ensure these parameters are non-zero before performing\nthe division. If invalid trace values are detected, fall back to a safe\ndefault of 1.\n\nAdditionally, prevent an arithmetic underflow in the touch reporting\nlogic. Previously, if the calculated or fallback width was smaller than\nETP_FWIDTH_REDUCE (90), the subtraction would underflow, resulting in a\nmassive unsigned integer being reported to userspace. Clamp the adjusted\nwidth to a minimum of 0 to safely handle small physical dimensions and\nfallback scenarios.\n\nCompleting the probe with safe fallback values ensures the sysfs nodes\nare created, keeping the firmware update path intact so a recovery\nfirmware can be flashed to the device.",
  "id": "GHSA-742p-q3m8-x43j",
  "modified": "2026-07-25T12:31:28Z",
  "published": "2026-07-25T12:31:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64275"
    },
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      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/01e0317c256c560d8dcce2e9825eb6142ee34611"
    },
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      "url": "https://git.kernel.org/stable/c/2f281ff0163a38fdc4cb4061f0c241e643283a5e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59d4cc5e7a9785e4bdc9c55273274c6b49d4b58d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bac57d8fe2a077b8a85b4140eeb7999078158eb"
    },
    {
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      "url": "https://git.kernel.org/stable/c/8c1db3418a419e788691746b9c47f863c2fd4890"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df2b818fa009c10ff6ba875a1663ff001cda9558"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f6d10af2036d1d4a847a74fe47ebbf93bce3c84c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/feb4866a42ec94764c7eb58012256f6f37664727"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

CVE-2026-64275 (GCVE-0-2026-64275)

GHSA-742P-Q3M8-X43J

Tags

Sightings

Nomenclature