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CVE-2026-81017

8.4 · HIGH

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_n…

Published Sep 11, 2026EPSS 0.18%

Overview

CVE-2026-81017 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/2b602ecf6193ecb9720c78b6728d7e09370b1ff1Refgit.kernel.org/stable/c/324880f94ba3c6269a607e04f78a4dd4a66b3f53Refgit.kernel.org/stable/c/3a76b87e1d065183e2e7ae5b800cb1f6e84f543dRefgit.kernel.org/stable/c/3d2636dce0a8fe9eecad29010699847be425dc80Refgit.kernel.org/stable/c/4d9bf63ed74f859c6698bc01d8fb216ef9253867Refgit.kernel.org/stable/c/5eaf7faa99578ae090030d1e2e6ea3b37a615496Refgit.kernel.org/stable/c/833740a2333c2e4db4e02e3d0ffba04e8718a5f3Refgit.kernel.org/stable/c/d1b4add68dabfdd6481a4fa198bf3b473d2634d7

How CyberStrike helps

Frequently asked questions

What is CVE-2026-81017?

CVE-2026-81017 is a high-severity vulnerability. It was published on September 11, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-81017?

This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-81017?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-81017?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-81017 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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