In the Linux kernel, the following vulnerability has been resolved:
tracing: Add down_write(trace_event_sem) 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.
If two modules are loaded at the same time, the adding of the event to the
ftrace_events list can corrupt the walking of the list in the code that is
modifying the printk format strings and crash the kernel.
The addition of the event should take the trace_event_sem for write while
it adds the new event.
Also add a lockdep_assert_held() on that semaphore in
__trace_add_event_dirs() as it iterates the list.
CVSS
No CVSS.
References
Configurations
No configuration.
History
16 Aug 2025, 12:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-08-16 12:15
Updated : 2025-08-16 12:15
NVD link : CVE-2025-38539
Mitre link : CVE-2025-38539
CVE.ORG link : CVE-2025-38539
JSON object : View
Products Affected
No product.
CWE
No CWE.