Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: tracing: Have show_event_filters/triggers files take trace array ref The newly added files show_event_filters and show_event_triggers that show all filters or triggers that are set within the trace array do not take a reference for the trace array it is showing. Without taking a reference, the trace_array may be freed via "rmdir" while a task is reading one of theses files. Those files iterate all the events within an instance (trace_array) and nothing prevents that instance from being freed while its data is being read. This causes a use-after-free crash. Have the open of both those files take the trace_array reference via the trace_array_get() that prevents the trace_array from being freed while the files are opened.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 729757b96a662d87e334fe8b837707800d8fd551 before 2ee3f7d43f79efaca0cd84a6798653d9d75ce60b; affected 729757b96a662d87e334fe8b837707800d8fd551 before f4a771cc684c7354b6200147f7252c58d17408ff |
| Linux / Linux | affected 7.0; unaffected 0 before 7.0; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.