GHSA-9FVP-PHGH-6GX2
Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-14 15:32In 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.
{
"affected": [],
"aliases": [
"CVE-2026-81017"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-11T20:19:10Z",
"severity": "HIGH"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/chrome: sensorhub: Bound the EC-reported sensor number\n\nEach EC FIFO event carries an 8-bit sensor number (in-\u003esensor_num).\ncros_ec_sensorhub_ring_handler() validates the FIFO event count, the\nper-read count and the ring bound, but not the sensor number, which\ncros_ec_sensor_ring_process_event() then uses unchecked to index\nsensorhub-\u003ebatch_state[] - allocated with only sensorhub-\u003esensor_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.",
"id": "GHSA-9fvp-phgh-6gx2",
"modified": "2026-09-14T15:32:23Z",
"published": "2026-09-11T21:31:24Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81017"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/2b602ecf6193ecb9720c78b6728d7e09370b1ff1"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/324880f94ba3c6269a607e04f78a4dd4a66b3f53"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3a76b87e1d065183e2e7ae5b800cb1f6e84f543d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/3d2636dce0a8fe9eecad29010699847be425dc80"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/4d9bf63ed74f859c6698bc01d8fb216ef9253867"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/5eaf7faa99578ae090030d1e2e6ea3b37a615496"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/833740a2333c2e4db4e02e3d0ffba04e8718a5f3"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/d1b4add68dabfdd6481a4fa198bf3b473d2634d7"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
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