CVE-2026-23178HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()
Updated under an hour ago ()
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 85df713377ddc0482071c3e6b64c37bd1e48f1f1 before f9c9ad89d845f88a1509e9d672f65d234425fde9; from 85df713377ddc0482071c3e6b64c37bd1e48f1f1 before cff3f619fd1cb40cdd89971df9001f075613d219; from 85df713377ddc0482071c3e6b64c37bd1e48f1f1 before 786ec171788bdf9dda38789163f1b1fbb47f2d1e; from 85df713377ddc0482071c3e6b64c37bd1e48f1f1 before 2124279f1f8c32c1646ce98e75a1a39b23b7db76; from 85df713377ddc0482071c3e6b64c37bd1e48f1f1 before 2497ff38c530b1af0df5130ca9f5ab22c5e92f29 | CNA record |
References
- https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9
- https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219
- https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e
- https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76
- https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.