Linux Kernel ksmbd Use-After-Free Vulnerability in Session RPC Handling

A use-after-free vulnerability has been identified in the Linux kernel's ksmbd component, specifically within the session RPC handling. This issue arises from a race condition between the functions ksmbd_session_rpc_open() and __session_rpc_close(), which can lead to improper memory management. The vulnerability has been addressed by adding a lock to the session to prevent this race condition.

Impact

Exploitation of this vulnerability could lead to a use-after-free condition, potentially allowing for memory corruption or arbitrary code execution.