CVE-2026-23178 (GCVE-0-2026-23178)

Vulnerability from cvelistv5 – Published: 2026-02-14 16:27 – Updated: 2026-02-14 16:27
VLAI?
Title
HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()
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.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f9c9ad89d845f88a1509e9d672f65d234425fde9 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < cff3f619fd1cb40cdd89971df9001f075613d219 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 786ec171788bdf9dda38789163f1b1fbb47f2d1e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2124279f1f8c32c1646ce98e75a1a39b23b7db76 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 2497ff38c530b1af0df5130ca9f5ab22c5e92f29 (git)
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    Linux Linux Unaffected: 6.1.163 , ≤ 6.1.* (semver)
Unaffected: 6.6.124 , ≤ 6.6.* (semver)
Unaffected: 6.12.70 , ≤ 6.12.* (semver)
Unaffected: 6.18.10 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/hid/i2c-hid/i2c-hid-core.c"
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      "cpeApplicability": [
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          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-14T16:27:10.108Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9"
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          "url": "https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219"
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        },
        {
          "url": "https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29"
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      ],
      "title": "HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()",
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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": "2026-02-14T16:27:10.108Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-23178\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-02-14T17:15:55.537\",\"lastModified\":\"2026-02-14T17:15:55.537\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"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\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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