Bluetooth: HIDP: validate numbered report payloads

{
  "id": "7d9d8166f27bcd5389b78aad6d5ca31ddb5acfc84d1b43b06e7a5b2227c75251",
  "url": "https://osv.dev/vulnerability/CVE-2026-74507",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Bluetooth: HIDP: validate numbered report payloads",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HIDP: validate numbered report payloads When hidp_get_raw_report() waits for a numbered report, hidp_process_data() compares the expected report number with skb->data[0]. A connected HIDP peer can reply with only a DATA transaction header, leaving the skb empty after the header is removed. KMSAN reports an uninitialized-value use in hidp_session_run(), with the value originating in __alloc_skb() through vhci_write(). The transaction header checks remove the empty-frame reports, but this report remains until the payload check is added. The comparison can also consume a peer-controlled byte beyond the declared L2CAP PDU. A DATA | FEATURE response followed by an extra 0x01 byte made the current code accept that byte as report ID 1 and complete HIDIOCGFEATURE with a zero-byte result. With this change the malformed response is rejected with -EIO, while a subsequent valid response still succeeds. Require a payload byte before comparing a numbered report ID. Unnumbered reports continue to accept an empty payload.",
    "evidence": "osv:CVE-2026-74507",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.265",
            "evidence": "/affected/1/ranges"
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          {
            "value": "5.15.216",
            "evidence": "/affected/1/ranges"
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            "value": "6.1.183",
            "evidence": "/affected/1/ranges"
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          {
            "value": "7.1.8",
            "evidence": "/affected/1/ranges"
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        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-74507",
      "aliases": [
        "CVE-2026-74507"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"
        }
      ],
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                {
                  "fixed": "689d8bb7fee96b7196b572b015b6055c6616ce0c"
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                  "fixed": "c73beb320f5705e508bf7d385b8cc5ef8d9c8b69"
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      ],
      "modified": "2026-10-28T02:30:52.110635893Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/011bf4350d941f1995b2bd4b815ee206cacf2b8e",
        "https://git.kernel.org/stable/c/27cc0e603355c585f1e5da8398faa4d36d498188",
        "https://git.kernel.org/stable/c/34f53d27b81a16a02828c8fdfa4e02badc326f17",
        "https://git.kernel.org/stable/c/689d8bb7fee96b7196b572b015b6055c6616ce0c",
        "https://git.kernel.org/stable/c/7e7162427659b70ea17cd41b1f79e2e64c246690",
        "https://git.kernel.org/stable/c/9c841f59e10b5d75c398a3fc6b2da448d2a2276b",
        "https://git.kernel.org/stable/c/b7ad105d46acd828e424454815e4cd31069e047a",
        "https://git.kernel.org/stable/c/c73beb320f5705e508bf7d385b8cc5ef8d9c8b69",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74507.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-74507",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74507.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-74507",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520932,
  "published_at": "2026-08-15T12:27:30.683+00:00"
}