I think you’re referring to seccomp-bpf. seccomp has never been escaped and it is unlikely such a bug could happen due its simplicity. If you do not know the difference between seccomp and seccomp-bpf, please check references: https://en.wikipedia.org/wiki/Seccomp
The semantic gymnastics here are pretty interesting. It’s about as secure / impossible to penetrate as anyone could reasonably guarantee in the face of future uncertainty. If you don’t understand why, please check references on how seccomp works: https://en.Wikipedia.org/wiki/Seccomp
