CVE-2026-63821 | Linux Kernel up to 6.6.143/6.12.94/6.18.37/7.1.2 rtw88 USB Driver rtw_usb_write_port allocation of resources (WID-SEC-2026-2403)

A vulnerability marked as problematic has been reported in Linux Kernel up to 6.6.143/6.12.94/6.18.37/7.1.2. Affected is the function rtw_usb_write_port of the component rtw88 USB Driver. The manipulation leads to allocation of resources. This vulnerability is traded as CVE-2026-63821. An attack has to be approached locally. There is no exploit available. It is suggested to upgrade the affected component.