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CVE-2026-72356

Estado: RecibidaAlta (7.5)—

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

cifs: Fix missing credit release on failure in cifs_issue_read()

Fix missing release of credits in the failure path in cifs_issue_read() lest retrying the subreq just overwrites the credits value.

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 en kernel Linux (CIFS) con acceso remoto sin autenticación (AV:N/PR:N) que causa denegación de servicio (A:H). El fallo en liberar créditos puede permitir agotamiento de recursos.

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)

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{
  "id": "CVE-2026-72356",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "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": "69c3c023af25edb5433a2db824d3e7cc328f0183",
              "lessThan": "b9ee1f0347bf56d019ca28ddff090234bb45b05c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "69c3c023af25edb5433a2db824d3e7cc328f0183",
              "lessThan": "86652704a7fd41a5a8459027e08640bbd1952826",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "69c3c023af25edb5433a2db824d3e7cc328f0183",
              "lessThan": "3a303f985c6bec8787c2ad4a16b39c14c5bcd765",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "69c3c023af25edb5433a2db824d3e7cc328f0183",
              "lessThan": "c16b8c4cfb4fe2244cc33e469a93c1ab8684146b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/smb/client/file.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": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "fs/smb/client/file.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:09.053",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/3a303f985c6bec8787c2ad4a16b39c14c5bcd765",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/86652704a7fd41a5a8459027e08640bbd1952826",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b9ee1f0347bf56d019ca28ddff090234bb45b05c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c16b8c4cfb4fe2244cc33e469a93c1ab8684146b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix missing credit release on failure in cifs_issue_read()\n\nFix missing release of credits in the failure path in cifs_issue_read()\nlest retrying the subreq just overwrites the credits value."
    }
  ],
  "lastModified": "2026-08-17T06:18:39.780",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}