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CVE-2022-50050

Estado: AnalizadaAlta (7.8)—

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

ASoC: SOF: Intel: hda: Fix potential buffer overflow by snprintf()

snprintf() returns the would-be-filled size when the string overflows the given buffer size, hence using this value may result in the buffer overflow (although it's unrealistic).

This patch replaces with a safer version, scnprintf() for papering over such a potential issue.

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.

Buffer overflow (CWE-787) en kernel Linux con acceso local (AV:L/PR:L) permite escalada de privilegios (T1068) y ejecución de código (T1059) con contexto elevado (C:H/I:H/A:H).

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationFilter Network Traffic

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2022-50050",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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": "29c8e4398f02adacd429c7847dacc8aea5a0c2f1",
              "lessThan": "6ee1310f4d148dbf04c4159b88afd0b941018903",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "f7915c5614a7ece117ec390f21a410531eac48de",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "29c8e4398f02adacd429c7847dacc8aea5a0c2f1",
              "lessThan": "94c1ceb043c1a002de9649bb630c8e8347645982",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/soc/sof/intel/hda.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.10"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.10",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.63",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "5.19.4",
              "versionType": "semver",
              "lessThanOrEqual": "5.19.*"
            },
            {
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "sound/soc/sof/intel/hda.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-06-18T11:15:33.613",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/6ee1310f4d148dbf04c4159b88afd0b941018903",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/94c1ceb043c1a002de9649bb630c8e8347645982",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f7915c5614a7ece117ec390f21a410531eac48de",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: Intel: hda: Fix potential buffer overflow by snprintf()\n\nsnprintf() returns the would-be-filled size when the string overflows\nthe given buffer size, hence using this value may result in the buffer\noverflow (although it's unrealistic).\n\nThis patch replaces with a safer version, scnprintf() for papering\nover such a potential issue."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ASoC: SOF: Intel: hda: Corrección de un posible desbordamiento de búfer mediante snprintf(). snprintf() devuelve el tamaño que se espera que se llene cuando la cadena supera el tamaño de búfer especificado; por lo tanto, usar este valor podría provocar un desbordamiento de búfer (aunque esto no es realista). Este parche reemplaza a scnprintf(), una versión más segura, para disimular este posible problema."
    }
  ],
  "lastModified": "2026-06-17T05:22:38.533",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4EAF8A17-9D2B-4D00-8AFC-37B8C9A85408",
              "versionEndExcluding": "5.15.63",
              "versionStartIncluding": "5.10"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0E669300-DA42-4ACD-86D8-68BE5F29FB88",
              "versionEndExcluding": "5.19.4",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E8BD11A3-8643-49B6-BADE-5029A0117325"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}