Linux Kernel WoWLAN Management Interface Vulnerability in rtw89 Driver

A vulnerability in the Linux kernel's rtw89 Wi-Fi driver can lead to list management errors during the Wake on WLAN (WoWLAN) resume process. When WoWLAN fails, the driver can inadvertently initialize the management entry list twice without removing the interface first. This flaw causes a corruption in the list management, leading to a kernel bug and potential instability. The issue has been observed in the rtw89_8852ce version of the driver.

Impact

The vulnerability can cause a kernel bug due to list management corruption, leading to potential system instability.

Reproduction

The vulnerability can be reproduced by triggering a WoWLAN resume process that fails, causing the rtw89 driver to initialize the management entry list twice without properly removing the interface first. This sequence creates a corruption in the list management, which can be verified by the resulting kernel bug.