CyberRota Analysis
AI-GeneratedThe vulnerability exists in the Linux kernel's Wi-Fi driver, specifically in the handling of the mac_id field within RX descriptors, which can lead to out-of-bounds access due to insufficient validation of firmware-provided values. This flaw could potentially allow attackers to exploit the driver by sending malicious firmware, leading to memory corruption or denial of service. Organizations using affected Linux kernel versions, particularly those relying on the rtw89 driver for Wi-Fi functionality, should prioritize applying the patch to mitigate these risks.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: add bounds check on firmware mac_id in link lookup The mac_id field in RX descriptors is 8 bits wide (0-255), but assoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries. While the driver currently assigns mac_id values below 128, the descriptor value comes from firmware and is not validated before use as an array index. Add a defensive bounds check in rtw89_assoc_link_rcu_dereference() to guard against out-of-range firmware values.