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CVE-2026-9034

Estado: Pendiente de análisisAlta (7.8)—

Use After Free vulnerability in Arm Ltd Bifrost GPU Userspace Driver, Arm Ltd Valhall GPU Userspace Driver, Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver allows a non-privileged user process to perform valid GPU processing operations, including via WebGL or WebGPU, to access already freed memory.

This issue affects Bifrost GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r51p0, from r54p1 through r54p3; Valhall GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0.

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.

CWE-416 (Use After Free) en driver GPU con AV:L/PR:L permite a usuario no-privilegiado acceder memoria liberada vía WebGL/WebGPU, consiguiendo lectura de datos y potencial ejecución de código en contexto GPU.

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

Tecnologías afectadas (3)

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

ARM — 5TH GEN GPU Architecture Userspace DriverAIARM — Bifrost GPU Userspace DriverAIARM — Valhall GPU Userspace DriverAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-9034",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-9034",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-10T18:02:25.753459Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "arm-security@arm.com",
      "affectedData": [
        {
          "vendor": "Arm Ltd",
          "product": "Bifrost GPU Userspace Driver",
          "versions": [
            {
              "status": "affected",
              "version": "r42p0",
              "versionType": "patch",
              "lessThanOrEqual": "r49p5"
            },
            {
              "status": "affected",
              "version": "r50p0",
              "versionType": "patch",
              "lessThanOrEqual": "r51p0"
            },
            {
              "status": "affected",
              "version": "r54p1",
              "versionType": "patch",
              "lessThanOrEqual": "r54p3"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Arm Ltd",
          "product": "Valhall GPU Userspace Driver",
          "versions": [
            {
              "status": "affected",
              "version": "r42p0",
              "versionType": "patch",
              "lessThanOrEqual": "r49p5"
            },
            {
              "status": "affected",
              "version": "r50p0",
              "versionType": "patch",
              "lessThanOrEqual": "r54p3"
            },
            {
              "status": "affected",
              "version": "r55p0",
              "versionType": "patch"
            },
            {
              "status": "unaffected",
              "version": "r56p0",
              "versionType": "patch"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Arm Ltd",
          "product": "Arm 5th Gen GPU Architecture Userspace Driver",
          "versions": [
            {
              "status": "affected",
              "version": "r42p0",
              "versionType": "patch",
              "lessThanOrEqual": "r49p5"
            },
            {
              "status": "affected",
              "version": "r50p0",
              "versionType": "patch",
              "lessThanOrEqual": "r54p3"
            },
            {
              "status": "affected",
              "version": "r55p0",
              "versionType": "patch"
            },
            {
              "status": "unaffected",
              "version": "r56p0",
              "versionType": "patch"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-08T15:18:56.353",
  "references": [
    {
      "url": "https://support.arm.com/documentation/111552/1-0/?lang=en",
      "source": "arm-security@arm.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "arm-security@arm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use After Free vulnerability in Arm Ltd Bifrost GPU Userspace Driver, Arm Ltd Valhall GPU Userspace Driver, Arm Ltd Arm 5th Gen GPU Architecture Userspace Driver allows a non-privileged user process to perform valid GPU processing operations, including via WebGL or WebGPU, to access already freed memory.\n\n\n\nThis issue affects Bifrost GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r51p0, from r54p1 through r54p3; Valhall GPU Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0; Arm 5th Gen GPU Architecture Userspace Driver: from r42p0 through r49p5, from r50p0 through r54p3, r55p0."
    }
  ],
  "lastModified": "2026-09-10T19:17:42.527",
  "sourceIdentifier": "arm-security@arm.com"
}