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CVE-2026-68262

Estado: RecibidaAlta (7.1)—

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

drm/imagination: Fix user array stride in pvr_set_uobj_array()

pvr_set_uobj_array() copies an array of kernel objects to a userspace array whose element size is described by out->stride. When out->stride is different from the kernel object size, the slow path advances the userspace pointer by the kernel object size and the kernel pointer by the userspace stride.

This reverses the intended layout. For larger userspace strides, later copies read from the wrong kernel addresses. For smaller userspace strides, later copies are written at the wrong userspace offsets. The padding clear is also done only for the first element instead of the padding area for each element.

Leer descripción completaMostrar menos

Advance the userspace pointer by out->stride and the kernel pointer by obj_size, and clear per-element padding while the current userspace pointer is still available.

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.

Acceso local (AV:L) sin interacción del usuario en kernel Linux. Desbordamiento de buffer por stride incorrecto permite lectura de memoria kernel (C:H) y corrupción de datos (I:A:H tras reparación).

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 StorageNetwork SegmentationExecution 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-2026-68262",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "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": "f99f5f3ea7efd54ba0529c4f2d7c72712918a522",
              "lessThan": "bbebc39a70f6fc9b02637c8624349e30325873cb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f99f5f3ea7efd54ba0529c4f2d7c72712918a522",
              "lessThan": "b983a35dad3701399c692d7c6eb57d8b6ffc0929",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f99f5f3ea7efd54ba0529c4f2d7c72712918a522",
              "lessThan": "09beaf4aec05b0525f2153dce693f3eb3166697a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f99f5f3ea7efd54ba0529c4f2d7c72712918a522",
              "lessThan": "8dc8f3f4c2382fb7d1b1986ba8f33a2466cd3d7a",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/imagination/pvr_drv.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.8",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/imagination/pvr_drv.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:14.990",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/09beaf4aec05b0525f2153dce693f3eb3166697a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8dc8f3f4c2382fb7d1b1986ba8f33a2466cd3d7a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b983a35dad3701399c692d7c6eb57d8b6ffc0929",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bbebc39a70f6fc9b02637c8624349e30325873cb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Fix user array stride in pvr_set_uobj_array()\n\npvr_set_uobj_array() copies an array of kernel objects to a userspace\narray whose element size is described by out->stride. When out->stride\nis different from the kernel object size, the slow path advances the\nuserspace pointer by the kernel object size and the kernel pointer by the\nuserspace stride.\n\nThis reverses the intended layout. For larger userspace strides, later\ncopies read from the wrong kernel addresses. For smaller userspace\nstrides, later copies are written at the wrong userspace offsets. The\npadding clear is also done only for the first element instead of the\npadding area for each element.\n\nAdvance the userspace pointer by out->stride and the kernel pointer by\nobj_size, and clear per-element padding while the current userspace\npointer is still available."
    }
  ],
  "lastModified": "2026-08-17T05:18:28.580",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}