CVE-2022-50719

Estado: AplazadaAlta (7.8)—

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

ALSA: line6: fix stack overflow in line6_midi_transmit

Correctly calculate available space including the size of the chunk buffer. This fixes a buffer overflow when multiple MIDI sysex messages are sent to a PODxt device.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.23%
Percentil entre todas las CVEs puntuadas: 12
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution75 %

Acceso local con privilegios (AV:L, PR:L) permite explotar desbordamiento de búfer en controlador ALSA para ejecutar código con permisos elevados en el kernel Linux.

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 Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

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-2022-50719",
  "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": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "b026af92b2cea907c780f7168c730c816cd33311",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "49cb7737e733013ec86aa77ed2e19b94a68eaa05",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "0c76087449ee4ed45a88b10017d02c6694caedb1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "25e8c6ecb46843a955f254b8f0d77894e4a53dc4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "66f359ad66d49f75d39ac729f9114dabf90b81bb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "0c9118e381ff538874e00fd4e66a768273c150fb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "61e4be4a60cc6de723f8c574ddbcb3025eb44cac",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "389d34c2a8b52acc351fd932ed4bea41fee5a39b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f2459201c72e8f8553644505eed19954d4c3a023",
              "lessThan": "b8800d324abb50160560c636bfafe2c81001b66c",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/usb/line6/midi.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "4.9.337",
              "versionType": "semver",
              "lessThanOrEqual": "4.9.*"
            },
            {
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "sound/usb/line6/midi.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T13:15:58.560",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0c76087449ee4ed45a88b10017d02c6694caedb1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0c9118e381ff538874e00fd4e66a768273c150fb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/25e8c6ecb46843a955f254b8f0d77894e4a53dc4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/389d34c2a8b52acc351fd932ed4bea41fee5a39b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/49cb7737e733013ec86aa77ed2e19b94a68eaa05",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/61e4be4a60cc6de723f8c574ddbcb3025eb44cac",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/66f359ad66d49f75d39ac729f9114dabf90b81bb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b026af92b2cea907c780f7168c730c816cd33311",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b8800d324abb50160560c636bfafe2c81001b66c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: line6: fix stack overflow in line6_midi_transmit\n\nCorrectly calculate available space including the size of the chunk\nbuffer. This fixes a buffer overflow when multiple MIDI sysex\nmessages are sent to a PODxt device."
    }
  ],
  "lastModified": "2026-08-04T10:18:22.053",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}