7.8

CVE-2026-23178: HID: i2c-hid: fix potential buffer overflow in i2c_hid_get_report()

Deferred
AliasesUBUNTU-CVE-2026-23178DEBIAN-CVE-2026-23178
Published 14-02-2026Last modified 19-10-2026

Vulnerability summary

CVE-2026-23178 is a high (CVSS 7.8) Heap-based Buffer Overflow vulnerability in linux. EPSS estimates a 0.20% chance of exploitation in the next 30 days, higher than 9.7% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.20%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 24 · Related 19
DLA-4499-1DSA-6141-1DSA-6163-1MGASA-2026-0097MGASA-2026-0098OPENSUSE-SU-2026:20416-1

Timeline

  1. 14-02-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.20%

Chance of exploitation in the next 30 days

Percentile

10%

Versus all other CVEs

30-day change

Increase +0.05 pp

From 0.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu130 products
  • linux< 6.8.0-117.117 | All versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.8.0-1055.58 | All versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.164-1 | < 6.12.73-1 | < 6.18.10-1
Linux1 product
  • linux≥ 85df713377ddc0482071c3e6b64c37bd1e48f1f1, < f9c9ad89d845f88a1509e9d672f65d234425fde9 | ≥ 85df713377ddc0482071c3e6b64c37bd1e48f1f1, < cff3f619fd1cb40cdd89971df9001f075613d219 | ≥ 85df713377ddc0482071c3e6b64c37bd1e48f1f1, < 786ec171788bdf9dda38789163f1b1fbb47f2d1e | ≥ 85df713377ddc0482071c3e6b64c37bd1e48f1f1, < 2124279f1f8c32c1646ce98e75a1a39b23b7db76 | ≥ 85df713377ddc0482071c3e6b64c37bd1e48f1f1, < 2497ff38c530b1af0df5130ca9f5ab22c5e92f29 | 5.18

3 vendors · 132 products

References

18 links
Show all 18 references