CyberRota Analysis
AI-GeneratedA race condition vulnerability exists in the Linux kernel's rxrpc subsystem, specifically in the rxrpc_wake_up_io_thread() function, where the I/O thread pointer may be re-evaluated after an initial check, potentially leading to a NULL dereference. This flaw can disrupt the proper functioning of I/O threads, impacting system stability and performance. Organizations using Linux systems that rely on the rxrpc protocol should prioritize addressing this issue to ensure reliable operation and prevent potential service disruptions.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: fix io_thread race in rxrpc_wake_up_io_thread() rxrpc_wake_up_io_thread() checks local->io_thread before waking it, but then reloads the pointer for wake_up_process(). local->io_thread is cleared with WRITE_ONCE() when the I/O thread exits, so the second load can see NULL even if the first load did not. Take a READ_ONCE() snapshot and use it for both the NULL check and the wake_up_process() call, as rxrpc_encap_rcv() already does.