In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: Fix use-after-free race in sample_restore_put() Concurrent teardown of TC sample rules sharing the same restore context may re-read restore->count after dropping restore_lock. At that point another thread may already have completed cleanup and freed the restore object. Use the result of the refcount decrement while holding restore_lock to determine whether cleanup is needed.
https://git.kernel.org/stable/c/af3aef0245abbab5e9f6302e7a7d6407187afb71
https://git.kernel.org/stable/c/72324da8eeca269db9196c2a555abf72eb0385c5
https://git.kernel.org/stable/c/3efd1a1938cbb33c53b0d75e55b6c0fe2ebad79a
https://git.kernel.org/stable/c/1daecd76ab9e5f055fe3970462410ad1d40bd177