CVE-2026-72066

Estado: RecibidaAlta (7.8)—

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

states_show() adds CPU hotplug state names into a single sysfs buffer using sprintf(). With enough registered states, this can write past the end of the PAGE_SIZE buffer.

Use sysfs_emit_at() so output is bounded.

Detalles técnicos trazas, registros y código del informe original

cpu: hotplug: Bound hotplug states sysfs output

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: 0.18%
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 principalT1059 Command and Scripting Interpreterexecution75 %
Impacto secundarioT1499.004 Application or System Exploitationimpact60 %

Vulnerabilidad local (AV:L/PR:L) que permite escribir más allá del buffer en sysfs, escalando a ejecución de código o denegación de servicio en el kernel Linux.

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 Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Filter Network Traffic

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-2026-72066",
  "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": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "27481cf4365a6ff5c9be3590143e7ed434000266",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "2408be459c70ef4250da1a9e50f5478e6b250d61",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "998f66e9ce320f3433f60b948e3698b744754a46",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "61a73a123ac7a7fbc57382531f8cb7092d569aba",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "6cb15b81ff545840048fb0e1a6e827d560dbf367",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "631d53102da9f469c96b882b770336bec095b833",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "98f8cdce1db580b99fce823a48eea2cb2bdb261e",
              "lessThan": "86f436567f2516a0083b210bedc933544826a2c3",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "kernel/cpu.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "kernel/cpu.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:21:16.203",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2408be459c70ef4250da1a9e50f5478e6b250d61",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/27481cf4365a6ff5c9be3590143e7ed434000266",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/61a73a123ac7a7fbc57382531f8cb7092d569aba",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/631d53102da9f469c96b882b770336bec095b833",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6cb15b81ff545840048fb0e1a6e827d560dbf367",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/86f436567f2516a0083b210bedc933544826a2c3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/998f66e9ce320f3433f60b948e3698b744754a46",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/de4d3d8ae17dc8b4cf8c59436c4b7e2dc2491635",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpu: hotplug: Bound hotplug states sysfs output\n\nstates_show() adds CPU hotplug state names into a single sysfs buffer\nusing sprintf(). With enough registered states, this can write past the\nend of the PAGE_SIZE buffer.\n\nUse sysfs_emit_at() so output is bounded."
    }
  ],
  "lastModified": "2026-08-19T17:20:57.343",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}