CVE-2026-23178

Root-triggered kernel memory corruption via oversized hidraw report

Published Feb 14, 2026 · Updated Feb 14, 2026

Buffer overflow in the i2c-hid driver in Linux Kernel allows local users to corrupt kernel memory through a crafted hidraw report request. The i2c_hid_get_report path passes a user-controlled recv_len to i2c_hid_xfer, which reads that length plus two bytes into a smaller runtime-sized raw buffer. Access to hidraw devices requires root, and the published record identifies no lower-privilege or remote path.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the i2c-hid driver in Linux Kernel allows local users to corrupt kernel memory through a crafted hidraw report request. The i2c_hid_get_report path passes a user-controlled recv_len to i2c_hid_xfer, which reads that length plus two bytes into a smaller runtime-sized raw buffer. Access to hidraw devices requires root, and the published record identifies no lower-privilege or remote path.

The record

CVE
CVE-2026-23178
Published
Feb 14, 2026
Updated
Feb 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2124279f1f8c32c1646ce98e75a1a39b23b7db76
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2497ff38c530b1af0df5130ca9f5ab22c5e92f29
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <786ec171788bdf9dda38789163f1b1fbb47f2d1e
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cff3f619fd1cb40cdd89971df9001f075613d219
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f9c9ad89d845f88a1509e9d672f65d234425fde9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2124279f1f8c32c1646ce98e75a1a39b23b7db76; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <2497ff38c530b1af0df5130ca9f5ab22c5e92f29; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <786ec171788bdf9dda38789163f1b1fbb47f2d1e; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <cff3f619fd1cb40cdd89971df9001f075613d219; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f9c9ad89d845f88a1509e9d672f65d234425fde9

Published CVSS scores

7.8LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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