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GHSA-52CJ-P9JC-4MFV

Vulnerability from github – Published: 2026-09-24 18:31 – Updated: 2026-09-24 18:31

Details

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

drm/amdgpu: Bound GPIO I2C table entry count from VBIOS

Reject undersized tables and cap the derived entry count to AMDGPU_MAX_I2C_BUS so we do not overrun adev->i2c_bus[] or walk an absurd number of entries on corrupt size fields.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-97493"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-24T17:17:26Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Bound GPIO I2C table entry count from VBIOS\n\nReject undersized tables and cap the derived entry count\nto AMDGPU_MAX_I2C_BUS so we do not overrun adev-\u003ei2c_bus[]\nor walk an absurd number of entries on corrupt size fields.",
  "id": "GHSA-52cj-p9jc-4mfv",
  "modified": "2026-09-24T18:31:34Z",
  "published": "2026-09-24T18:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-97493"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a99cd231cd924b7160fecb9fb3a94b801522323b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8f0985375c3b977757fd73e2b691ff1bf1ea7b9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-97493 (GCVE-0-2026-97493)

Vulnerability from cvelistv5 – Published: 2026-09-24 16:04 – Updated: 2026-09-24 16:04

Title

drm/amdgpu: Bound GPIO I2C table entry count from VBIOS

Summary

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Bound GPIO I2C table entry count from VBIOS Reject undersized tables and cap the derived entry count to AMDGPU_MAX_I2C_BUS so we do not overrun adev->i2c_bus[] or walk an absurd number of entries on corrupt size fields.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/f8f0985375c3b9777…
https://git.kernel.org/stable/c/a99cd231cd924b716…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f8f0985375c3b977757fd73e2b691ff1bf1ea7b9 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a99cd231cd924b7160fecb9fb3a94b801522323b (git) Affected: 0 , < 6.18.53 (semver)
Linux	Linux	Unaffected: 6.18.53 , ≤ 6.18.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f8f0985375c3b977757fd73e2b691ff1bf1ea7b9",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "a99cd231cd924b7160fecb9fb3a94b801522323b",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6.18.53",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
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                }
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: Bound GPIO I2C table entry count from VBIOS\n\nReject undersized tables and cap the derived entry count\nto AMDGPU_MAX_I2C_BUS so we do not overrun adev-\u003ei2c_bus[]\nor walk an absurd number of entries on corrupt size fields."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-24T16:04:41.120Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f8f0985375c3b977757fd73e2b691ff1bf1ea7b9"
        },
        {
          "url": "https://git.kernel.org/stable/c/a99cd231cd924b7160fecb9fb3a94b801522323b"
        }
      ],
      "title": "drm/amdgpu: Bound GPIO I2C table entry count from VBIOS",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97493",
    "datePublished": "2026-09-24T16:04:41.120Z",
    "dateReserved": "2026-09-24T16:01:01.150Z",
    "dateUpdated": "2026-09-24T16:04:41.120Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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-52CJ-P9JC-4MFV

CVE-2026-97493 (GCVE-0-2026-97493)

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