CVE-2023-53460: 
Linux Kernel vulnerability analysis and mitigation

CVE-2023-53460 is a memory leak vulnerability discovered in the Linux kernel's rtw88 WiFi driver, specifically in the rtw_usb_probe() function located in drivers/net/wireless/realtek/rtw88/usb.c. The vulnerability was disclosed on October 1, 2025, affecting the hardware resource allocation mechanism where the 'hw' resource from ieee80211_alloc_hw() was not properly released on line 811 (NVD).

The vulnerability exists in the rtw_usb_probe() function of the Linux kernel's rtw88 WiFi driver. The issue occurs at line 876 where a memory leak is present due to improper resource management of the 'hw' allocation from ieee80211_alloc_hw(). The fix involves modifying the return statement to a goto statement to ensure proper cleanup (Ubuntu).

The vulnerability could lead to memory leaks in the Linux kernel when using the rtw88 WiFi driver, potentially causing system resource exhaustion over time. This affects various Linux distributions including Ubuntu 22.04 LTS (jammy) and other versions that use the affected kernel versions (Ubuntu).

The vulnerability has been fixed by modifying the return statement to a goto statement in the rtw_usb_probe() function, ensuring proper cleanup of allocated resources. Users should update their Linux kernel to a patched version when available through their distribution's update system (NVD).