CVE-2025-38539

In the Linux kernel, the following vulnerability has been resolved: tracing: Add downwritetraceeventsem when adding trace event When a module is loaded, it adds trace events defined by the module. It may also need to modify the modules trace printk formats to replace enum names with their values...

CVE-2025-38539

CVE-2025-38539 : Linux kernel tracing fix. When a module loads and adds trace events, it now takes the trace_event_sem for write while adding the event, preventing possible corruption of the ftrace_events list if two modules load simultaneously. The patch also adds a lockdep_assert_held() on the ...

systemtap: signed module loading race condition

The insertmodule function in runtime/staprun/staprunfuncs.c in the systemtap runtime tool staprun in SystemTap before 1.6 does not properly validate a module when loading it, which allows local users to gain privileges via a race condition between the signature validation and the module...