platform/chrome: sensorhub: Bound the EC-reported sensor number (CVE-2026-81017) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-81017

platform/chrome: sensorhub: Bound the EC-reported sensor number

Answer in brief

CVE-2026-81017 records a Unknown severity vulnerability in platform/chrome: sensorhub: Bound the EC-reported sensor number. 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 Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. 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
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=145d59baff5944b71551ac518d7fd7d377a9c820 <3d2636dce0a8fe9eecad29010699847be425dc80 \|\| >=145d59baff5944b71551ac518d7fd7d377a9c820 <5eaf7faa99578ae090030d1e2e6ea3b37a615496 \|\| >=145d59baff5944b71551ac518d7fd7d377a9c820 <4d9bf63ed74f859c6698bc01d8fb216ef9253867 \|\| >=145d59baff5944b71551ac518d7fd7d377a9c820 <833740a2333c2e4db4e02e3d0ffba04e8718a5f3	3d2636dce0a8fe9eecad29010699847be425dc80, 5eaf7faa99578ae090030d1e2e6ea3b37a615496, 4d9bf63ed74f859c6698bc01d8fb216ef9253867, 833740a2333c2e4db4e02e3d0ffba04e8718a5f3
Linux/Linuxgeneric	5.7	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 3d2636dce0a8fe9eecad29010699847be425dc80 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: platform/chrome: sensorhub: Bound the EC-reported sensor number Each EC FIFO event carries an 8-bit sensor number (in->sensor_num). cros_ec_sensorhub_ring_handler() validates the FIFO event count, the per-read count and the ring bound, but not the sensor number, which cros_ec_sensor_ring_process_event() then uses unchecked to index sensorhub->batch_state[] - allocated with only sensorhub->sensor_num entries. A sensor number of sensor_num or larger is an out-of-bounds read and write of batch_state[]. Validate the sensor number in the ring handler, where each event is read from the EC, and drop a malformed event before it is used.

Quoted source text, attributed separately from HOL analysis.