Linux Kernel Vulnerability in Net/Handshake Component

CVE-2023-53686

What is CVE-2023-53686?

A vulnerability exists in the Linux kernel within the net/handshake component, where improper handling of socket lookups can lead to a null pointer dereference. If the socket lookup fails, the subsequent calls to trace_handshake_cmd_done_err() can result in dereferencing garbage values. The issue is exacerbated by a failure to manage the flow of execution correctly, leading to potential system crashes or unauthorized access. This vulnerability highlights the need for rigorous error handling and validation during socket communication in kernel operations.

References