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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-81017
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-11 20:19:10 UTC
Updated2026-09-14 13:18:55 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 8.4 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67

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

EPSS: 0.001820000 probability, percentile 0.079710000 (date 2026-09-14)

VersionSourceTypeScoreSeverityVector
3.1416baaa9-dc9f-4396-8d5f-8c081fb06d67Secondary8.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.4HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 3a76b87e1d065183e2e7ae5b800cb1f6e84f543d git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 2b602ecf6193ecb9720c78b6728d7e09370b1ff1 git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 324880f94ba3c6269a607e04f78a4dd4a66b3f53 git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 d1b4add68dabfdd6481a4fa198bf3b473d2634d7 git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 3d2636dce0a8fe9eecad29010699847be425dc80 git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 5eaf7faa99578ae090030d1e2e6ea3b37a615496 git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 4d9bf63ed74f859c6698bc01d8fb216ef9253867 git Not specified
CNA Linux Linux affected 145d59baff5944b71551ac518d7fd7d377a9c820 833740a2333c2e4db4e02e3d0ffba04e8718a5f3 git Not specified
CNA Linux Linux affected 5.7 Not specified
CNA Linux Linux unaffected 5.7 semver Not specified
CNA Linux Linux unaffected 5.10.270 5.10.* semver Not specified
CNA Linux Linux unaffected 5.15.221 5.15.* semver Not specified
CNA Linux Linux unaffected 6.1.188 6.1.* semver Not specified
CNA Linux Linux unaffected 6.6.157 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.109 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.50 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2.4 7.2.* semver Not specified
CNA Linux Linux unaffected 7.3-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3d2636dce0a8fe9eecad29010699847be425dc80 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/2b602ecf6193ecb9720c78b6728d7e09370b1ff1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3a76b87e1d065183e2e7ae5b800cb1f6e84f543d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/833740a2333c2e4db4e02e3d0ffba04e8718a5f3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/d1b4add68dabfdd6481a4fa198bf3b473d2634d7 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/5eaf7faa99578ae090030d1e2e6ea3b37a615496 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/324880f94ba3c6269a607e04f78a4dd4a66b3f53 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/4d9bf63ed74f859c6698bc01d8fb216ef9253867 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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