Improper Validation of Array Index in Linux kernel - CVE-2026-93799
Published: September 25, 2026
Vulnerability identifier: #VU152098
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93799
CWE-ID: CWE-129
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform an out-of-bounds array access.
The vulnerability exists due to improper validation of an array index in the iwl_mvm_window_status_notif BA window status notification handler when processing a BA window status notification. A local user can cause processing of a notification containing an invalid station ID to perform an out-of-bounds array access.
The station ID is extracted as a 5-bit value from the firmware notification and is used to index the fw_id_to_mac_id[] array.
Affected software
Linux kernel
How to mitigate CVE-2026-93799
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3