« Volver al listado

CVE-2025-39975

Estado: AplazadaCrítica (9.8)—

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

smb: client: fix wrong index reference in smb2_compound_op()

In smb2_compound_op(), the loop that processes each command's response uses wrong indices when accessing response bufferes.

This incorrect indexing leads to improper handling of command results. Also, if incorrectly computed index is greather than or equal to MAX_COMPOUND, it can cause out-of-bounds accesses.

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.

Vector AV:N/AC:L/PR:N/UI:N indica explotación remota sin privilegios (T1190). Indexación incorrecta en kernel SMB permite ejecución de código o denegación de servicio remota.

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

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)

Mostrar
{
  "id": "CVE-2025-39975",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "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": "5ddcc9e92d54548219985ce4de88618fb53e14ec",
              "lessThan": "ba7bcfd52c66dd1c2dfa5142aca7e4a70b62dfa5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efe8db3ecaa40a8520dc9a54283dcecd82ceea9c",
              "lessThan": "bfb1e2aad1fecef8320fd71332acde0d53a8d699",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3681c74d342db75b0d641ba60de27bf73e16e66b",
              "lessThan": "093615fc76063ea08d454ba86677ce64c736e806",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3681c74d342db75b0d641ba60de27bf73e16e66b",
              "lessThan": "fbe2dc6a9c7318f7263f5e4d50f6272b931c5756",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "77aefd1d9b790f60634adebbdcfffbe934f41c34",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.6.75",
              "lessThan": "6.6.109",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.12.12",
              "lessThan": "6.12.50",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.13.1",
              "lessThan": "6.14",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/smb/client/smb2inode.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.109",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.16.10",
              "versionType": "semver",
              "lessThanOrEqual": "6.16.*"
            },
            {
              "status": "unaffected",
              "version": "6.17",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/smb/client/smb2inode.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-15T08:15:35.273",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/093615fc76063ea08d454ba86677ce64c736e806",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba7bcfd52c66dd1c2dfa5142aca7e4a70b62dfa5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bfb1e2aad1fecef8320fd71332acde0d53a8d699",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fbe2dc6a9c7318f7263f5e4d50f6272b931c5756",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix wrong index reference in smb2_compound_op()\n\nIn smb2_compound_op(), the loop that processes each command's response\nuses wrong indices when accessing response bufferes.\n\nThis incorrect indexing leads to improper handling of command results.\nAlso, if incorrectly computed index is greather than or equal to\nMAX_COMPOUND, it can cause out-of-bounds accesses."
    }
  ],
  "lastModified": "2026-07-30T06:24:03.460",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}