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CVE-2026-80531

Estado: RecibidaAlta (7.8)—

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

xfs: avoid UAF on sc->tempip in xrep_tempfile_create

LOLLM noticed a potential UAF if the tempfile creation code fails after it set sc->tempip. Fix that.

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 sin interacción (AV:L, UI:N, PR:L) en kernel de Linux permite escalada de privilegios mediante UAF. Impactos: bypass de control de acceso, denegación de servicio y corrupción de datos del kernel.

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

Application Developer GuidanceActive Directory ConfigurationUser TrainingUser Account ManagementThreat Intelligence ProgramRestrict File and Directory Permissions

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-2026-80531",
  "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": "84c14ee39dd388d73054181c70b3f42af7ddc238",
              "lessThan": "08a20776ce33a2a52d856911e447c59424f0465a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "84c14ee39dd388d73054181c70b3f42af7ddc238",
              "lessThan": "cd1f876d1bc2e94f271e07c606cacd85b109108a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "84c14ee39dd388d73054181c70b3f42af7ddc238",
              "lessThan": "96246a3200d32a43766152e56bc7ae2d93604d74",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "84c14ee39dd388d73054181c70b3f42af7ddc238",
              "lessThan": "0c88e10d12de9ca7cbed1467bb1b52310101bff8",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/xfs/scrub/tempfile.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.10",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.105",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "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/scrub/tempfile.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-26T15:17:07.140",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08a20776ce33a2a52d856911e447c59424f0465a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0c88e10d12de9ca7cbed1467bb1b52310101bff8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/96246a3200d32a43766152e56bc7ae2d93604d74",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cd1f876d1bc2e94f271e07c606cacd85b109108a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: avoid UAF on sc->tempip in xrep_tempfile_create\n\nLOLLM noticed a potential UAF if the tempfile creation code fails after\nit set sc->tempip.  Fix that."
    }
  ],
  "lastModified": "2026-08-27T06:17:33.500",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}