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CVE-2026-98247

Estado: RecibidaSin puntuar—

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

Bluetooth: hci_codec: validate vendor codec count length

The Read Local Supported Codecs parsers consume the variable-sized standard codec array before parsing the vendor codec count. Although the initial reply-size check includes a vendor count byte in the fixed layout, it does not guarantee that the byte remains after the standard codec array.

If a controller reply ends immediately after that array, calculating the vendor codec array size reads vnd_codecs->num beyond the skb data. Use skb_pull_data() to validate and consume each codec header before using its count in both command variants.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

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).

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-2026-98247",
  "cveTags": [],
  "metrics": {},
  "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": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "lessThan": "9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "a6da782fefae611e68a1aa79644065fc8ca5abcd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "lessThan": "e4cfd3c4299105237458b27958bd7b0aa4c60795",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "lessThan": "f49a543d76d48f184b34225d9c0e2fc4cbdea8ec",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "lessThan": "12a82819b0cada6e304790b1097f8f9006eb6123",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8961987f3f5fa2f2618e72304d013c8dd5e604a6",
              "lessThan": "d0795cfd6f655f4de84868a4f4bb41a03f037b3d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/bluetooth/hci_codec.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": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/bluetooth/hci_codec.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:12.940",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/12a82819b0cada6e304790b1097f8f9006eb6123",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9c04b9a4d08b95dee901d24b7607c4cbd65fa0a8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d0795cfd6f655f4de84868a4f4bb41a03f037b3d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e4cfd3c4299105237458b27958bd7b0aa4c60795",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f49a543d76d48f184b34225d9c0e2fc4cbdea8ec",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: validate vendor codec count length\n\nThe Read Local Supported Codecs parsers consume the variable-sized\nstandard codec array before parsing the vendor codec count.  Although the\ninitial reply-size check includes a vendor count byte in the fixed layout,\nit does not guarantee that the byte remains after the standard codec array.\n\nIf a controller reply ends immediately after that array, calculating the\nvendor codec array size reads vnd_codecs->num beyond the skb data.  Use\nskb_pull_data() to validate and consume each codec header before using its\ncount in both command variants."
    }
  ],
  "lastModified": "2026-10-06T09:18:12.940",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}