GHSA-RHHH-MWPC-M2QJ
Vulnerability from github – Published: 2026-02-14 18:30 – Updated: 2026-04-03 15:30In 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.
{
"affected": [],
"aliases": [
"CVE-2026-23178"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-02-14T17:15:55Z",
"severity": "HIGH"
},
"details": "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.",
"id": "GHSA-rhhh-mwpc-m2qj",
"modified": "2026-04-03T15:30:29Z",
"published": "2026-02-14T18:30:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23178"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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