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  4. CVE 2026 31401 hid bpf prevent buffer overflow in hidhwrequest
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Back to active CVEs
High · CVSS 7.8CVE-2026-31401

HID: bpf: prevent buffer overflow in hid_hw_requestCVE-2026-31401

Answer in brief

CVE-2026-31401 records a High severity (CVSS 7.8) vulnerability in HID: bpf: prevent buffer overflow in hid_hw_request. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Apr 3, 2026Updated Oct 16, 2026Source checked Oct 16, 2026First seen by HOL Oct 16, 2026Material review Oct 16, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linuxgeneric>=8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 <d6efaa50af62fb0790dd1fd4e7e5506b46312510 || >=8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 <73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1 || >=8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 <eb57dae20fdf6f3069cdc07821fa3bb46de381d7 || >=8bd0488b5ea58655ad6fdcbe0408ef49b16882b1 <2b658c1c442ec1cd9eec5ead98d68662c40fe645d6efaa50af62fb0790dd1fd4e7e5506b46312510, 73c5b5aea1c443239c8cb4191b4af7a4bd6fd7b1, eb57dae20fdf6f3069cdc07821fa3bb46de381d7, 2b658c1c442ec1cd9eec5ead98d68662c40fe645
Linux/Linuxgeneric6.11Not reported

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
  2. 2Review the reported fix. Update Linux/Linux to d6efaa50af62fb0790dd1fd4e7e5506b46312510 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Apr 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 16, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 16, 2026

Sources and claim methodology

  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
  • Source referencegit.kernel.org
Upstream source description

In the Linux kernel, the following vulnerability has been resolved: HID: bpf: prevent buffer overflow in hid_hw_request right now the returned value is considered to be always valid. However, when playing with HID-BPF, the return value can be arbitrary big, because it's the return value of dispatch_hid_bpf_raw_requests(), which calls the struct_ops and we have no guarantees that the value makes sense.

Quoted source text, attributed separately from HOL analysis.

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Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
Not reported
Source
CVE List V5
Source checked
Oct 16, 2026
References
4 linked sources
Open source record