CVE-2025-37884

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> bpf: Fix deadlock between rcu_tasks_trace and event_mutex.<br /> <br /> Fix the following deadlock:<br /> CPU A<br /> _free_event()<br /> perf_kprobe_destroy()<br /> mutex_lock(&amp;event_mutex)<br /> perf_trace_event_unreg()<br /> synchronize_rcu_tasks_trace()<br /> <br /> There are several paths where _free_event() grabs event_mutex<br /> and calls sync_rcu_tasks_trace. Above is one such case.<br /> <br /> CPU B<br /> bpf_prog_test_run_syscall()<br /> rcu_read_lock_trace()<br /> bpf_prog_run_pin_on_cpu()<br /> bpf_prog_load()<br /> bpf_tracing_func_proto()<br /> trace_set_clr_event()<br /> mutex_lock(&amp;event_mutex)<br /> <br /> Delegate trace_set_clr_event() to workqueue to avoid<br /> such lock dependency.