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CVE-2026-74295

Estado: RecibidaAlta (7.1)—

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

ASoC: codecs: hdac_hdmi: Validate written enum value

hdac_hdmi_set_pin_port_mux() uses the written enum value to index the texts array before calling snd_soc_dapm_put_enum_double(), which validates that the value is within the enum item range.

An out-of-range value can therefore make the driver read past the texts array before the helper rejects the write. Move the lookup after the helper has accepted the 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.

Acceso local con privilegios (PR:L) sin interacción permite escalada de privilegios mediante lectura fuera de límites en el kernel. La validación insuficiente (out-of-range) expone datos y causa denegación de servicio.

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-2026-74295",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "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": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "216336418c007c4b44c650acf2fd3d2de5bb81e8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "bc464a6a9e352daa17b1636c090cf3185710b9a0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "8cbf24714d6b3f553fc959632c9781176a73a9a7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "7f02e9064b6f84e7f93c72f134306271eb4f7de4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "9131e4b023e0db5764680034bdc94aeae0b0f33d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "d8961b5c7889b6ecc00f1409d36826df1665df27",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a3478debf36c0aa0cf0860daec245b13cd4448f",
              "lessThan": "0b08baeccdcf52fad328ad645f5b4fbee04eea34",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/soc/codecs/hdac_hdmi.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "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": [
            "sound/soc/codecs/hdac_hdmi.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:29.097",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0b08baeccdcf52fad328ad645f5b4fbee04eea34",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/216336418c007c4b44c650acf2fd3d2de5bb81e8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7f02e9064b6f84e7f93c72f134306271eb4f7de4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8cbf24714d6b3f553fc959632c9781176a73a9a7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9131e4b023e0db5764680034bdc94aeae0b0f33d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bc464a6a9e352daa17b1636c090cf3185710b9a0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d8961b5c7889b6ecc00f1409d36826df1665df27",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: codecs: hdac_hdmi: Validate written enum value\n\nhdac_hdmi_set_pin_port_mux() uses the written enum value to index the\ntexts array before calling snd_soc_dapm_put_enum_double(), which validates\nthat the value is within the enum item range.\n\nAn out-of-range value can therefore make the driver read past the texts\narray before the helper rejects the write. Move the lookup after the helper\nhas accepted the value."
    }
  ],
  "lastModified": "2026-08-17T06:19:23.553",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}