Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: tracing: Delay module ref count for "enable_event" trigger Triggers are now delayed from freeing, but can still be triggered until after the RCU grace period has ended. The freeing of the enable_event data is put into the private_data_free() callback, but the put of the module refcount is done immediately. It is possible that if a module is removed that has an event that would enable (or disable) it is still active, it can read the data of the module after it is removed causing a use-after-free bug. Move the trace_event_put_ref() that releases the module into the delayed callback so that the module can not be removed until any reference to its events are finished.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 61d445af0a7c70018111919e47beaaee15653f2f before 159fdc3e01dca5fdbc412fcd8b239895733a270d; affected 61d445af0a7c70018111919e47beaaee15653f2f before e091351b38818ef620d27f44f4bfd625f13afbff |
| Linux / Linux | affected 6.19; unaffected 0 before 6.19; unaffected 7.1.6 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.