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CVE-2026-72372

Estado: RecibidaAlta (7.8)—

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

afs: Fix lack of locking around modifications of net->cells_dyn_ino

Fix the lack of locking around modifications of net->cells_dyn_ino by taking net->cells_lock exclusively. This also requires to cell to be removed from net->cells_dyn_ino in afs_destroy_cell_work() rather than in afs_cell_destroy() as the latter runs in RCU cleanup context and sleeping locks cannot be taken there.

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 local sin UI requerida en kernel Linux (AV:L/PR:L/UI:N) que permite escalada de privilegios por race condition en sincronización. La falta de bloqueos permite modificar estructuras de datos críticas, causando corrupción de datos o DoS.

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 ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

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-2026-72372",
  "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": "537b0105952578531f748c7fb3ce36ae9a514784",
              "lessThan": "4d8a2fe8847859f4fa4e9a2fa1221c9c1158e66b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1d0b929fc070b4115403a0a6206a0c6a62dd61f5",
              "lessThan": "2ffb70a8a01988046bb207b7d0af9358a8337378",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1d0b929fc070b4115403a0a6206a0c6a62dd61f5",
              "lessThan": "e94f92fd56c553a8bf9421c3289e1b85c7c08857",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1d0b929fc070b4115403a0a6206a0c6a62dd61f5",
              "lessThan": "55e841836c6f4646490f7b0347192b7a92d431ba",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.12.97",
              "lessThan": "6.12.101",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/afs/cell.c",
            "fs/afs/dynroot.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "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/afs/cell.c",
            "fs/afs/dynroot.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:10.680",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2ffb70a8a01988046bb207b7d0af9358a8337378",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4d8a2fe8847859f4fa4e9a2fa1221c9c1158e66b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/55e841836c6f4646490f7b0347192b7a92d431ba",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e94f92fd56c553a8bf9421c3289e1b85c7c08857",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nafs: Fix lack of locking around modifications of net->cells_dyn_ino\n\nFix the lack of locking around modifications of net->cells_dyn_ino by\ntaking net->cells_lock exclusively.  This also requires to cell to be\nremoved from net->cells_dyn_ino in afs_destroy_cell_work() rather than in\nafs_cell_destroy() as the latter runs in RCU cleanup context and sleeping\nlocks cannot be taken there."
    }
  ],
  "lastModified": "2026-08-17T06:18:41.480",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}