CVE-2026-80763 (GCVE-0-2026-80763)
Vulnerability from cvelistv5
Published
2026-09-04 15:12
Modified
2026-10-19 08:43
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
Version: 26afbd826ee326e63a334c37fd45e82e50a615ec
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{
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          "programFiles": [
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          "versions": [
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              "version": "7.2.1",
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              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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      "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\u0027s 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:43:19.796Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/9e05783d0bb96a7b853cc058a7c7de2dc4a62154"
        },
        {
          "url": "https://git.kernel.org/stable/c/26741d178f31932c9018b36b7953e6dc391436a4"
        },
        {
          "url": "https://git.kernel.org/stable/c/a34df5c4a439cfc04565fa5be608ed1e53134f1f"
        },
        {
          "url": "https://git.kernel.org/stable/c/e3f82e8f2a5915f533b57a065e9a045aa2ee03bc"
        },
        {
          "url": "https://git.kernel.org/stable/c/d83ecb7b96105d932dabaa56ccd7418c25fb7cbb"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fc540e835dddb518cef3ff522b780f701cd03df"
        },
        {
          "url": "https://git.kernel.org/stable/c/0acd4eeb4b225b9bebbf9ef96cc10cdd79b94899"
        }
      ],
      "title": "Bluetooth: hci_event: validate LE Set CIG Parameters response",
      "x_generator": {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80763",
    "datePublished": "2026-09-04T15:12:35.652Z",
    "dateReserved": "2026-08-26T14:34:25.791Z",
    "dateUpdated": "2026-10-19T08:43:19.796Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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