CVE-2026-23178 (GCVE-0-2026-23178)
Vulnerability from cvelistv5
Published
2026-02-14 16:27
Modified
2026-04-03 13:32
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report() `i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data into `ihid->rawbuf`. The former can come from the userspace in the hidraw driver and is only bounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set `max_buffer_size` field of `struct hid_ll_driver` which we do not). The latter has size determined at runtime by the maximum size of different report types you could receive on any particular device and can be a much smaller value. Fix this by truncating `recv_len` to `ihid->bufsize - sizeof(__le16)`. The impact is low since access to hidraw devices requires root.
References
Impacted products
Vendor Product Version
Linux Linux Version: 85df713377ddc0482071c3e6b64c37bd1e48f1f1
Version: 85df713377ddc0482071c3e6b64c37bd1e48f1f1
Version: 85df713377ddc0482071c3e6b64c37bd1e48f1f1
Version: 85df713377ddc0482071c3e6b64c37bd1e48f1f1
Version: 85df713377ddc0482071c3e6b64c37bd1e48f1f1
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{
  "containers": {
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          "programFiles": [
            "drivers/hid/i2c-hid/i2c-hid-core.c"
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          "versions": [
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              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()\n\n`i2c_hid_xfer` is used to read `recv_len + sizeof(__le16)` bytes of data\ninto `ihid-\u003erawbuf`.\n\nThe former can come from the userspace in the hidraw driver and is only\nbounded by HID_MAX_BUFFER_SIZE(16384) by default (unless we also set\n`max_buffer_size` field of `struct hid_ll_driver` which we do not).\n\nThe latter has size determined at runtime by the maximum size of\ndifferent report types you could receive on any particular device and\ncan be a much smaller value.\n\nFix this by truncating `recv_len` to `ihid-\u003ebufsize - sizeof(__le16)`.\n\nThe impact is low since access to hidraw devices requires root."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-03T13:32:18.417Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9"
        },
        {
          "url": "https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219"
        },
        {
          "url": "https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e"
        },
        {
          "url": "https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76"
        },
        {
          "url": "https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29"
        }
      ],
      "title": "HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23178",
    "datePublished": "2026-02-14T16:27:10.108Z",
    "dateReserved": "2026-01-13T15:37:45.984Z",
    "dateUpdated": "2026-04-03T13:32:18.417Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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