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CVE-2026-80538

Estado: RecibidaAlta (7.1)—

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

xfs: propagate errors from xfs_rtginode_load

xfs_rtginode_ensure() treats every xfs_rtginode_load() error other than -ENOENT as success. This can leave the realtime group inode unset after an I/O, allocation, or corruption error. Growfs then continues as though the inode had been loaded.

Only -ENOENT means that the inode needs to be created. Return all other errors to the growfs caller.

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.

Acceso local (AV:L) sin interacción de usuario permite escalar privilegios manipulando inodos XFS. Error de propagación en growfs permite corrupción de datos del filesystem.

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-2026-80538",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 5.2,
        "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": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "lessThan": "ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "lessThan": "61c5165f02deb2eed9b6b539bb279e6629fee652",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ae897e0bed0f5461a6b1c3259c7d899759ba2a62",
              "lessThan": "b7e53968cb8882c2d276429ea8550848a4940874",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/xfs/xfs_rtalloc.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/xfs/xfs_rtalloc.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-26T15:17:08.017",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/61c5165f02deb2eed9b6b539bb279e6629fee652",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b7e53968cb8882c2d276429ea8550848a4940874",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ec19cea4ef1ce9d6e2e3f7e9e7bf88ede31176e7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: propagate errors from xfs_rtginode_load\n\nxfs_rtginode_ensure() treats every xfs_rtginode_load() error other than\n-ENOENT as success.  This can leave the realtime group inode unset after an\nI/O, allocation, or corruption error.  Growfs then continues as though the\ninode had been loaded.\n\nOnly -ENOENT means that the inode needs to be created.  Return all other\nerrors to the growfs caller."
    }
  ],
  "lastModified": "2026-08-27T06:17:34.550",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}