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CVE-2023-54135

Estado: AplazadaAlta (7.8)—

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

maple_tree: fix potential out-of-bounds access in mas_wr_end_piv()

Check the write offset end bounds before using it as the offset into the pivot array. This avoids a possible out-of-bounds access on the pivot array if the write extends to the last slot in the node, in which case the node maximum should be used as the end pivot.

akpm: this doesn't affect any current callers, but new users of mapletree may encounter this problem if backported into earlier kernels, so let's fix it in -stable kernels in case of this.

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.

AV:L/PR:L sin UI indica escalada local. Out-of-bounds en kernel Linux permite ejecución de código y negación de servicio con privilegios elevados.

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 InstallationFilter 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 KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2023-54135",
  "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": "54a611b605901c7d5d05b6b8f5d04a6ceb0962aa",
              "lessThan": "4e2ad53ababeaac44d71162650984abfe783960c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54a611b605901c7d5d05b6b8f5d04a6ceb0962aa",
              "lessThan": "dc4751bd4aba01ccfc02f91adfeee0ba4cda405c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54a611b605901c7d5d05b6b8f5d04a6ceb0962aa",
              "lessThan": "f5fcf6555a2a4f32947d17b92b173837cc652891",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54a611b605901c7d5d05b6b8f5d04a6ceb0962aa",
              "lessThan": "cd00dd2585c4158e81fdfac0bbcc0446afbad26d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "lib/maple_tree.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"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.37",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.3.11",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "status": "unaffected",
              "version": "6.4.1",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "lib/maple_tree.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:16:15.490",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4e2ad53ababeaac44d71162650984abfe783960c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cd00dd2585c4158e81fdfac0bbcc0446afbad26d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dc4751bd4aba01ccfc02f91adfeee0ba4cda405c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f5fcf6555a2a4f32947d17b92b173837cc652891",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmaple_tree: fix potential out-of-bounds access in mas_wr_end_piv()\n\nCheck the write offset end bounds before using it as the offset into the\npivot array.  This avoids a possible out-of-bounds access on the pivot\narray if the write extends to the last slot in the node, in which case the\nnode maximum should be used as the end pivot.\n\nakpm: this doesn't affect any current callers, but new users of mapletree\nmay encounter this problem if backported into earlier kernels, so let's\nfix it in -stable kernels in case of this."
    }
  ],
  "lastModified": "2026-08-04T10:19:30.993",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}