Out-of-bounds write in Linux kernel - CVE-2026-81017
Published: September 12, 2026
Vulnerability identifier: #VU149381
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-81017
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to read from and write to memory out of bounds.
The vulnerability exists due to improper bounds checking in cros_ec_sensorhub_ring_handler() when processing EC-reported FIFO events. A local user can trigger processing of an EC FIFO event containing an out-of-range sensor number to read from and write to memory out of bounds.
Affected software
Linux kernel
How to mitigate CVE-2026-81017
Install security update from vendor's repository.