Linux Kernel Vulnerability in mwifiex Driver Affecting Wi-Fi Functionality

CVE-2023-53384

What is CVE-2023-53384?

A vulnerability in the mwifiex Wi-Fi driver within the Linux kernel could allow for a NULL pointer dereference. This issue arises in the method 'mwifiex_handle_uap_rx_forward()', where it is crucial to verify the result of 'skb_copy()'. Failure to check this value may lead to a scenario where a NULL pointer is accessed, disrupting the proper handling of network packets. To mitigate this, the driver must drop the original socket buffer (skb) upon encountering a copying failure, thus avoiding potential crashes or system instability.

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