CVE-2026-23178HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()
- 7.8HighCVSS base score
- 0.19%Exploitation in 30 daysEPSS · top 91% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By Linux
- 32 days later
· 32 days later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.19% · top 91% of all CVEs (15 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 – < f9c9ad89d845f88a1509e9d672f65d234425fde9
- affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 – < cff3f619fd1cb40cdd89971df9001f075613d219
- affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 – < 786ec171788bdf9dda38789163f1b1fbb47f2d1e
- affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 – < 2124279f1f8c32c1646ce98e75a1a39b23b7db76
- affected 85df713377ddc0482071c3e6b64c37bd1e48f1f1 – < 2497ff38c530b1af0df5130ca9f5ab22c5e92f29
- affected 5.18
- unaffected < 5.18
- unaffected 6.1.163 – ≤ 6.1.*
- unaffected 6.6.124 – ≤ 6.6.*
- unaffected 6.12.70 – ≤ 6.12.*
- unaffected 6.18.10 – ≤ 6.18.*
- unaffected 6.19 – ≤ *
References
References5
- https://git.kernel.org/stable/c/f9c9ad89d845f88a1509e9d672f65d234425fde9 (opens in a new tab)
- https://git.kernel.org/stable/c/cff3f619fd1cb40cdd89971df9001f075613d219 (opens in a new tab)
- https://git.kernel.org/stable/c/786ec171788bdf9dda38789163f1b1fbb47f2d1e (opens in a new tab)
- https://git.kernel.org/stable/c/2124279f1f8c32c1646ce98e75a1a39b23b7db76 (opens in a new tab)
- https://git.kernel.org/stable/c/2497ff38c530b1af0df5130ca9f5ab22c5e92f29 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-6112 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-23178)Record last updated .