{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "0ff1731a1ae51e8e48cd559d70db536281c47f8e"
            },
            {
              "fixed": "b7ad105d46acd828e424454815e4cd31069e047a"
            },
            {
              "fixed": "7e7162427659b70ea17cd41b1f79e2e64c246690"
            },
            {
              "fixed": "27cc0e603355c585f1e5da8398faa4d36d498188"
            },
            {
              "fixed": "9c841f59e10b5d75c398a3fc6b2da448d2a2276b"
            },
            {
              "fixed": "34f53d27b81a16a02828c8fdfa4e02badc326f17"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.39"
            },
            {
              "fixed": "6.6.151"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.103"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.44"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74507.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: HIDP: validate numbered report payloads\n\nWhen hidp_get_raw_report() waits for a numbered report,\nhidp_process_data() compares the expected report number with skb-\u003edata[0].\nA connected HIDP peer can reply with only a DATA transaction header,\nleaving the skb empty after the header is removed.\n\nKMSAN reports an uninitialized-value use in hidp_session_run(), with the\nvalue originating in __alloc_skb() through vhci_write(). The transaction\nheader checks remove the empty-frame reports, but this report remains until\nthe payload check is added.\n\nThe comparison can also consume a peer-controlled byte beyond the declared\nL2CAP PDU. A DATA | FEATURE response followed by an extra 0x01 byte made\nthe current code accept that byte as report ID 1 and complete\nHIDIOCGFEATURE with a zero-byte result. With this change the malformed\nresponse is rejected with -EIO, while a subsequent valid response still\nsucceeds.\n\nRequire a payload byte before comparing a numbered report ID. Unnumbered\nreports continue to accept an empty payload.",
  "id": "CVE-2026-74507",
  "modified": "2026-08-18T03:31:25.344194830Z",
  "published": "2026-08-15T12:27:30.683Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/27cc0e603355c585f1e5da8398faa4d36d498188"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/34f53d27b81a16a02828c8fdfa4e02badc326f17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7e7162427659b70ea17cd41b1f79e2e64c246690"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c841f59e10b5d75c398a3fc6b2da448d2a2276b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7ad105d46acd828e424454815e4cd31069e047a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/74xxx/CVE-2026-74507.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74507"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: HIDP: validate numbered report payloads"
}