{"id":"CVE-2026-81017","summary":"platform/chrome: sensorhub: Bound the EC-reported sensor number","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.","modified":"2026-09-16T03:30:18.874736895Z","published":"2026-09-11T19:43:05.409Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81017.json"},"references":[{"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"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81017.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81017"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"145d59baff5944b71551ac518d7fd7d377a9c820"},{"fixed":"3a76b87e1d065183e2e7ae5b800cb1f6e84f543d"},{"fixed":"2b602ecf6193ecb9720c78b6728d7e09370b1ff1"},{"fixed":"324880f94ba3c6269a607e04f78a4dd4a66b3f53"},{"fixed":"d1b4add68dabfdd6481a4fa198bf3b473d2634d7"},{"fixed":"3d2636dce0a8fe9eecad29010699847be425dc80"},{"fixed":"5eaf7faa99578ae090030d1e2e6ea3b37a615496"},{"fixed":"4d9bf63ed74f859c6698bc01d8fb216ef9253867"},{"fixed":"833740a2333c2e4db4e02e3d0ffba04e8718a5f3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81017.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.7.0"},{"fixed":"5.10.270"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.221"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.188"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.157"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.109"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.50"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"7.2.4"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-81017.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}