« Volver al listado

CVE-2026-89829

Estado: RecibidaAlta (7.8)—

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

f2fs: fix to pass folio->index to f2fs_sanity_check_node_footer()

Otherwise in f2fs_sanity_check_node_footer(), it will check the same nid incorrectly.

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 de kernel local (AV:L/PR:L) que permite escalada de privilegios mediante corrupción de estructura de datos en f2fs. Impacto de integridad/disponibilidad en sistema de archivos.

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)

Mostrar
{
  "id": "CVE-2026-89829",
  "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": "cd2fec912a0f04390d446ed692f73f2da842855f",
              "lessThan": "a984446aa9d5b787afa3023fc7b44017b80fe3bc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0a736109c9d29de0c26567e42cb99b27861aa8ba",
              "lessThan": "0b196c07407f48a41cd9741cf53e10cb1e23d2e5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "0a736109c9d29de0c26567e42cb99b27861aa8ba",
              "lessThan": "7e188e9f9437ab47c3237d609f1b26348d6fea1a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "971aa8e2a4043d92bf62061b79f74fd4ac59165a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.18.13",
              "lessThan": "6.18.51",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.19.3",
              "lessThan": "6.20",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/f2fs/node.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/f2fs/node.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:16:49.620",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0b196c07407f48a41cd9741cf53e10cb1e23d2e5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7e188e9f9437ab47c3237d609f1b26348d6fea1a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a984446aa9d5b787afa3023fc7b44017b80fe3bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to pass folio->index to f2fs_sanity_check_node_footer()\n\nOtherwise in f2fs_sanity_check_node_footer(), it will check the\nsame nid incorrectly."
    }
  ],
  "lastModified": "2026-09-16T15:18:11.667",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}