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CVE-2026-89832

Estado: RecibidaAlta (7.8)—

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

f2fs: fix to clear dirty flag on folio in error path

If node block is corrupted due to chksum mismatch or inconsistent footer info, it needs to drop clear flag of node folio, in order to persist inconsistent node data to storage.

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 con PR:L indica escalada local. Corrupción de datos en node block persiste inconsistencias (I:H). Impacto potencial en disponibilidad del sistema de archivos (A:H).

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-2026-89832",
  "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": "b42b179bda9ff11075a6fc2bac4d9e400513679a",
              "lessThan": "34732e3a8713f3b7acd1a0ea37e3a6bee4c78550",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b42b179bda9ff11075a6fc2bac4d9e400513679a",
              "lessThan": "ab35ae07f2b5b4e118ea47b88577fc7d0e797b17",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b42b179bda9ff11075a6fc2bac4d9e400513679a",
              "lessThan": "3923ec2b98c96dda4a8bfab81d22553dbf0dd6c2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b42b179bda9ff11075a6fc2bac4d9e400513679a",
              "lessThan": "5b86eab84ac8e9289b5afc52ef88ab18ba5bacab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8d7ebdd109b4654ec5e0e9c3c6f08b06d6558f10",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b039536485970829918aa237a08417bd0ed5437c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4.19.51",
              "lessThan": "4.20",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.1.10",
              "lessThan": "5.2",
              "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": "5.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "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": "2026-09-16T11:16:49.973",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/34732e3a8713f3b7acd1a0ea37e3a6bee4c78550",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3923ec2b98c96dda4a8bfab81d22553dbf0dd6c2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5b86eab84ac8e9289b5afc52ef88ab18ba5bacab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ab35ae07f2b5b4e118ea47b88577fc7d0e797b17",
      "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 clear dirty flag on folio in error path\n\nIf node block is corrupted due to chksum mismatch or inconsistent\nfooter info, it needs to drop clear flag of node folio, in order\nto persist inconsistent node data to storage."
    }
  ],
  "lastModified": "2026-10-03T11:17:44.070",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}