CVE-2026-81017

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.

CVSS v3 8.4 HIGH

8.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.5 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/2b602ecf6193ecb9720c78b6728d7e09370b1ff1
https://git.kernel.org/stable/c/324880f94ba3c6269a607e04f78a4dd4a66b3f53
https://git.kernel.org/stable/c/3a76b87e1d065183e2e7ae5b800cb1f6e84f543d
https://git.kernel.org/stable/c/3d2636dce0a8fe9eecad29010699847be425dc80
https://git.kernel.org/stable/c/4d9bf63ed74f859c6698bc01d8fb216ef9253867
https://git.kernel.org/stable/c/5eaf7faa99578ae090030d1e2e6ea3b37a615496
https://git.kernel.org/stable/c/833740a2333c2e4db4e02e3d0ffba04e8718a5f3
https://git.kernel.org/stable/c/d1b4add68dabfdd6481a4fa198bf3b473d2634d7

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-11 20:19

Updated : 2026-09-14 13:18

NVD link : CVE-2026-81017

Mitre link : CVE-2026-81017

CVE.ORG link : CVE-2026-81017

JSON object : View

Products Affected

No product.

CWE

No CWE.

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allocated with only sensorhub->sensor_num\nentries. A sensor number of sensor_num or larger is an out-of-bounds\nread and write of batch_state[].\n\nValidate the sensor number in the ring handler, where each event is read\nfrom the EC, and drop a malformed event before it is used."}], "lastModified": "2026-09-14T13:18:55.973", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}