CVE-2026-74409

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> wifi: rtw89: add bounds check on firmware mac_id in link lookup<br /> <br /> The mac_id field in RX descriptors is 8 bits wide (0-255), but<br /> assoc_link_on_macid[] has only RTW89_MAX_MAC_ID_NUM (128) entries.<br /> While the driver currently assigns mac_id values below 128, the<br /> descriptor value comes from firmware and is not validated before use<br /> as an array index. Add a defensive bounds check in<br /> rtw89_assoc_link_rcu_dereference() to guard against out-of-range<br /> firmware values.