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CVE-2026-93280

Estado: RecibidaAlta (8.8)—

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

greybus: audio: bound the topology section sizes against the fetched size

gb_audio_gb_get_topology() fetches a topology blob of a module-supplied size, and gbaudio_tplg_parse_data() then walks it by adding the module-supplied size_dais, size_controls and size_widgets fields to form the control, widget and route section offsets. Those le32 sizes are never checked against the fetched blob, so a module reporting a small topology size but large section sizes makes the offsets point past the allocation, and parsing reads out of bounds.

Leer descripción completaMostrar menos

Reject a topology whose section sizes do not fit within the fetched size before it is parsed.

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.

Vulnerabilidad en kernel de Linux (AV:A, acceso local en red adyacente). Lectura out-of-bounds por desvalidación de tamaños de sección permite leer datos de memoria no inicializada. Potencial DoS por acceso a memoria corrupta.

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

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationFilter Network TrafficDisable or Remove Feature or 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 KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-93280",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:A/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": 2.8
      }
    ]
  },
  "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": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "dd5593aee0a0fb353e1164aff7b65e563fe1f232",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "6f764363b3173d805be11e59a8f23ecee2d420d5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "52daf9de692ebac813d110eb1e677dc0e1f4a5ab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "d0f6eaba60705bacd9bb4ce48eab50ef3f546777",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "c9191f2e2f35f1209eb2dc24b31129dd47b48c16",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "184992e305f1de3a3d5fa446da3a2bc76be7c54a",
              "lessThan": "cfcc5a41a9664eb68023aae4cd0d485b256bd7c7",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "33d8c7b794d2a30637c9d3fcb478f1d3222bef1e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/staging/greybus/audio_gb.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.9"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.9",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/staging/greybus/audio_gb.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-24T16:17:25.290",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/33d8c7b794d2a30637c9d3fcb478f1d3222bef1e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/52daf9de692ebac813d110eb1e677dc0e1f4a5ab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6f764363b3173d805be11e59a8f23ecee2d420d5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ba86de9f7b0d7903d2df5ea2373e34d8ca3fc43e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c9191f2e2f35f1209eb2dc24b31129dd47b48c16",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cfcc5a41a9664eb68023aae4cd0d485b256bd7c7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d0f6eaba60705bacd9bb4ce48eab50ef3f546777",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dd5593aee0a0fb353e1164aff7b65e563fe1f232",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngreybus: audio: bound the topology section sizes against the fetched size\n\ngb_audio_gb_get_topology() fetches a topology blob of a module-supplied\nsize, and gbaudio_tplg_parse_data() then walks it by adding the\nmodule-supplied size_dais, size_controls and size_widgets fields to\nform the control, widget and route section offsets. Those le32 sizes\nare never checked against the fetched blob, so a module reporting a\nsmall topology size but large section sizes makes the offsets point\npast the allocation, and parsing reads out of bounds.\n\nReject a topology whose section sizes do not fit within the fetched\nsize before it is parsed."
    }
  ],
  "lastModified": "2026-09-25T05:17:01.627",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}