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CVE-2025-68753

Estado: AplazadaAlta (7.1)—

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

ALSA: firewire-motu: add bounds check in put_user loop for DSP events

In the DSP event handling code, a put_user() loop copies event data. When the user buffer size is not aligned to 4 bytes, it could overwrite beyond the buffer boundary.

Fix by adding a bounds check before put_user().

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.

AV:L/PR:L sin UI permite escalada local. Buffer overwrite en kernel ALSA permite corrupción de datos (I:H) y denegación de servicio (A:H) desde usuario privilegiado.

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 ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

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)

Mostrar
{
  "id": "CVE-2025-68753",
  "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:N/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "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": "634ec0b2906efd46f6f57977e172aa3470aca432",
              "lessThan": "ea2c921d9de6e32ca50cb817b9d57bb881be70de",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "634ec0b2906efd46f6f57977e172aa3470aca432",
              "lessThan": "6d4f17782ce4facf3197e79707df411ee3d7b30a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "634ec0b2906efd46f6f57977e172aa3470aca432",
              "lessThan": "0d71b3c2ed742f1ccb3b0b7a61afb90c0251093f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "634ec0b2906efd46f6f57977e172aa3470aca432",
              "lessThan": "df692cf2b601a54b34edfdb9e683d67483aa8ce1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "634ec0b2906efd46f6f57977e172aa3470aca432",
              "lessThan": "8f9e51cf2a2a43d0cd72d3dc0b5ccea3f639c187",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "634ec0b2906efd46f6f57977e172aa3470aca432",
              "lessThan": "298e753880b6ea99ac30df34959a7a03b0878eed",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/firewire/motu/motu-hwdep.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.16"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.16",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "sound/firewire/motu/motu-hwdep.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-01-05T10:15:56.310",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0d71b3c2ed742f1ccb3b0b7a61afb90c0251093f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/298e753880b6ea99ac30df34959a7a03b0878eed",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6d4f17782ce4facf3197e79707df411ee3d7b30a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8f9e51cf2a2a43d0cd72d3dc0b5ccea3f639c187",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/df692cf2b601a54b34edfdb9e683d67483aa8ce1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ea2c921d9de6e32ca50cb817b9d57bb881be70de",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: firewire-motu: add bounds check in put_user loop for DSP events\n\nIn the DSP event handling code, a put_user() loop copies event data.\nWhen the user buffer size is not aligned to 4 bytes, it could overwrite\nbeyond the buffer boundary.\n\nFix by adding a bounds check before put_user()."
    }
  ],
  "lastModified": "2026-07-30T06:24:42.730",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}