HIGH 7.8 NVD
CVE-2026-90014
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
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.
References
- https://git.kernel.org/stable/c/2ee3f7d43f79efaca0cd84a6798653d9d75ce60b
- https://git.kernel.org/stable/c/f4a771cc684c7354b6200147f7252c58d17408ff
This high severity vulnerability with a CVSS score of 7.8 was published on 2026-09-16 via NVD.
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