CVE-2022-50717

Estado: AplazadaCrítica (9.8)—

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

nvmet-tcp: add bounds check on Transfer Tag

ttag is used as an index to get cmd in nvmet_tcp_handle_h2c_data_pdu(), add a bounds check to avoid out-of-bounds access.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 9.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.82%
Percentil entre todas las CVEs puntuadas: 56
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1068 Exploitation for Privilege Escalationprivilege escalation75 %
Impacto secundarioT1499.004 Application or System Exploitationimpact65 %

Vulnerabilidad en nvmet-tcp del kernel Linux accesible por red sin autenticación (AV:N/PR:N). El fallo de bounds check en índice de array permite acceso fuera de límites, permitiendo lectura de memoria kernel o corrupción de datos con privilegios elevados, resultando en escalada local 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

Filter Network Traffic Application Isolation and Sandboxing Exploit Protection Update Software Vulnerability Scanning Threat Intelligence Program

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-50717",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
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      "affectedData": [
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          "defaultStatus": "unaffected"
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        {
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          "vendor": "Linux",
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              "version": "5.0"
            },
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              "status": "unaffected",
              "version": "0",
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              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.4.220",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.150",
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            },
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              "version": "5.15.75",
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              "version": "5.19.17",
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              "version": "6.0.3",
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              "version": "6.1",
              "versionType": "original_commit_for_fix",
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            }
          ],
          "programFiles": [
            "drivers/nvme/target/tcp.c"
          ],
          "defaultStatus": "affected"
        }
      ]
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  ],
  "published": "2025-12-24T13:15:58.360",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0d150ccd55dbfad36f55855b40b381884c98456e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: add bounds check on Transfer Tag\n\nttag is used as an index to get cmd in nvmet_tcp_handle_h2c_data_pdu(),\nadd a bounds check to avoid out-of-bounds access."
    }
  ],
  "lastModified": "2026-08-04T10:18:21.930",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}