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CVE-2023-53695

Estado: AplazadaAlta (7.8)—

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

udf: Detect system inodes linked into directory hierarchy

When UDF filesystem is corrupted, hidden system inodes can be linked into directory hierarchy which is an avenue for further serious corruption of the filesystem and kernel confusion as noticed by syzbot fuzzed images. Refuse to access system inodes linked into directory hierarchy and vice versa.

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 local (AV:L, PR:L) en kernel Linux permitiendo acceso a inodos ocultos del sistema mediante corrupción de jerarquía de directorios, escalando privilegios y causando corrupción de datos de filesystem o denegación de servicio.

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-2023-53695",
  "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": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "1dc71eeb198a8daa17d0c995998a53b0b749a158",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "d747b31e2925a2f384e7dd1901a2e5bc5f984ed8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "a44ec34b90440ada190924f5908b97026504fdcd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "37e74003d81e79457535cbbdfa1603431c03fac0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "1f328751b65c49c13a312d67a3bf27766b85baf7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "9e3b5ef7d02eaa6553e79b4af9bd99227280f245",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6174c2eb8ecef271159bdcde460ce8af54d8f72f",
              "lessThan": "85a37983ec69cc9fcd188bc37c4de15ee326355a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "801c7a20d255e300ab51a6fcb1d0e218d136b16f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3.17.2",
              "lessThan": "3.18",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/udf/inode.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.18",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.19.278",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.235",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/udf/inode.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-22T14:15:44.000",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1dc71eeb198a8daa17d0c995998a53b0b749a158",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1f328751b65c49c13a312d67a3bf27766b85baf7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/37e74003d81e79457535cbbdfa1603431c03fac0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/85a37983ec69cc9fcd188bc37c4de15ee326355a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9e3b5ef7d02eaa6553e79b4af9bd99227280f245",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a44ec34b90440ada190924f5908b97026504fdcd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d747b31e2925a2f384e7dd1901a2e5bc5f984ed8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nudf: Detect system inodes linked into directory hierarchy\n\nWhen UDF filesystem is corrupted, hidden system inodes can be linked\ninto directory hierarchy which is an avenue for further serious\ncorruption of the filesystem and kernel confusion as noticed by syzbot\nfuzzed images. Refuse to access system inodes linked into directory\nhierarchy and vice versa."
    }
  ],
  "lastModified": "2026-08-04T10:19:18.287",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}