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CVE-2026-80763

Estado: RecibidaSin puntuar—

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

Bluetooth: hci_event: validate LE Set CIG Parameters response

The Command Complete dispatch validates only the fixed part of the LE Set CIG Parameters response. After that part is pulled from the skb, hci_cc_le_set_cig_params() trusts num_handles and reads each entry in the trailing handle array.

Matching num_handles against the command's num_cis does not guarantee that the response contains the advertised handles. A truncated response from a malfunctioning controller can therefore make the handler read beyond the skb data.

Validate that the remaining skb data contains all advertised handles. Include this in the existing response validation so malformed responses also follow the established CIG failure handling.

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-2026-80763",
  "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": "26afbd826ee326e63a334c37fd45e82e50a615ec",
              "lessThan": "9e05783d0bb96a7b853cc058a7c7de2dc4a62154",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26afbd826ee326e63a334c37fd45e82e50a615ec",
              "lessThan": "26741d178f31932c9018b36b7953e6dc391436a4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26afbd826ee326e63a334c37fd45e82e50a615ec",
              "lessThan": "a34df5c4a439cfc04565fa5be608ed1e53134f1f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26afbd826ee326e63a334c37fd45e82e50a615ec",
              "lessThan": "e3f82e8f2a5915f533b57a065e9a045aa2ee03bc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26afbd826ee326e63a334c37fd45e82e50a615ec",
              "lessThan": "d83ecb7b96105d932dabaa56ccd7418c25fb7cbb",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "6fc540e835dddb518cef3ff522b780f701cd03df",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26afbd826ee326e63a334c37fd45e82e50a615ec",
              "lessThan": "0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/bluetooth/hci_event.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.187",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.154",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.106",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.47",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.11",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.1",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/bluetooth/hci_event.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-04T16:18:01.487",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/26741d178f31932c9018b36b7953e6dc391436a4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6fc540e835dddb518cef3ff522b780f701cd03df",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9e05783d0bb96a7b853cc058a7c7de2dc4a62154",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a34df5c4a439cfc04565fa5be608ed1e53134f1f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d83ecb7b96105d932dabaa56ccd7418c25fb7cbb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e3f82e8f2a5915f533b57a065e9a045aa2ee03bc",
      "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_event: validate LE Set CIG Parameters response\n\nThe Command Complete dispatch validates only the fixed part of the LE Set\nCIG Parameters response. After that part is pulled from the skb,\nhci_cc_le_set_cig_params() trusts num_handles and reads each entry in the\ntrailing handle array.\n\nMatching num_handles against the command's num_cis does not guarantee\nthat the response contains the advertised handles. A truncated response\nfrom a malfunctioning controller can therefore make the handler read\nbeyond the skb data.\n\nValidate that the remaining skb data contains all advertised handles.\nInclude this in the existing response validation so malformed responses\nalso follow the established CIG failure handling."
    }
  ],
  "lastModified": "2026-09-04T16:18:01.487",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}