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CVE-2026-93177

Estado: RecibidaAlta (7.3)—

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

drm/amdgpu/pm/powerplay: bounds-check voltage index in Vega10 lookup

vddInd, vddciInd and mvddInd from VBIOS-parsed tables index into vddc, vddci and vddmem lookup tables without bounds checks across nine sites. Return -EINVAL when any index is out of range.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de bounds-check en kernel Linux (AV:L, PR:L) permite escalada de privilegios mediante índices sin validar en tablas VBIOS. Impacto de DoS y corrupción de datos (HIGH para C,A).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-93177",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "f83a9991648bb4023a53104db699e99305890d51",
              "lessThan": "206e478810d6af50b25d8da72e3af8d55a014365",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f83a9991648bb4023a53104db699e99305890d51",
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              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f83a9991648bb4023a53104db699e99305890d51",
              "lessThan": "ae25c92d91f2cb90ede2b0eb0f58efa82ccc718b",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "versionType": "git"
            },
            {
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              "lessThan": "dfe89f1a0c7f40ef858b93881198f9728df956cf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f83a9991648bb4023a53104db699e99305890d51",
              "lessThan": "46d27e56dbd6345b9c7b62b67ec57407bf3bf29a",
              "versionType": "git"
            },
            {
              "status": "affected",
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            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.12"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.12",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega10_hwmgr.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:18:13.500",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/06aef6dcc1d52da5112cbcde39c062e493247ab5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/206e478810d6af50b25d8da72e3af8d55a014365",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/25dedc13ceb9b6109c79c92a726ca4ca017c9eaa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/46d27e56dbd6345b9c7b62b67ec57407bf3bf29a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6fa33f594e46e775a94097f71b486d7b006b6917",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ae25c92d91f2cb90ede2b0eb0f58efa82ccc718b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b349dcf061a6dc8c6cef9a10530331ef2ff66c72",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dfe89f1a0c7f40ef858b93881198f9728df956cf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu/pm/powerplay: bounds-check voltage index in Vega10 lookup\n\nvddInd, vddciInd and mvddInd from VBIOS-parsed tables index into vddc,\nvddci and vddmem lookup tables without bounds checks across nine sites.\nReturn -EINVAL when any index is out of range."
    }
  ],
  "lastModified": "2026-09-18T18:18:23.783",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}