CVE-2026-68427

Estado: RecibidaAlta (7.8)—

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

gpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings

__host1x_bo_unpin() drops the last reference to the mapping and frees it, so we can't dereference mapping afterwards. The cache itself outlives the mapping, so use the cache local variable instead.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.17%
Percentil entre todas las CVEs puntuadas: 6
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1499.004 Application or System Exploitationimpact60 %

Acceso local (AV:L) sin interacción del usuario sobre kernel Linux permite escalada de privilegios. Use-after-free puede causar DoS o corrupción de memoria.

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 Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

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

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-68427",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "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": "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": "af755456299d44e4ed6af3b7c70a7f03ea37fdf1",
              "lessThan": "86a9bd8c8f422d5f3079da31e151868902fcc702",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "71c017b3f83ff72638f2a1b1d6d4e7bc61d30231",
              "lessThan": "abeff53233b984571b87582bb588b4b38ef4ea50",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0e9dd7cfb9986b78cc81eca126ccfbf57f4c0602",
              "lessThan": "5b7e5f84d3d4cea10c3764d2da274810a7934228",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "5f4de3c717d34a24d555af581947742980778c02",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "b773faa32b0a98c3eb2b50d96de631681e5d1157",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3cbf5e3c46e66d9b3b6b91099bb720c6cb1be3bc",
              "lessThan": "266cddf7bd0f6c79b6c0633aef742a22bf70265b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/host1x/bus.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.1.178",
              "lessThan": "6.1.183",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.6.145",
              "lessThan": "6.6.148",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.12.97",
              "lessThan": "6.12.101",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.18.40",
              "lessThan": "6.18.42",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "7.1.5",
              "lessThan": "7.1.6",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/gpu/host1x/bus.c"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:36.653",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/266cddf7bd0f6c79b6c0633aef742a22bf70265b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5b7e5f84d3d4cea10c3764d2da274810a7934228",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5f4de3c717d34a24d555af581947742980778c02",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/86a9bd8c8f422d5f3079da31e151868902fcc702",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/abeff53233b984571b87582bb588b4b38ef4ea50",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b773faa32b0a98c3eb2b50d96de631681e5d1157",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpu: host1x: Fix use-after-free in host1x_bo_clear_cached_mappings\n\n__host1x_bo_unpin() drops the last reference to the mapping and frees\nit, so we can't dereference mapping afterwards. The cache itself\noutlives the mapping, so use the cache local variable instead."
    }
  ],
  "lastModified": "2026-08-19T17:20:49.627",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}