3.50.0 is out: New lock mode "drop" when sandbox policy may only be edited to reduce privileges a la pledge(2), KCOV/syzkaller support, support for memfd_secret(2) and SCM_PIDFD control message, glob support for ioctl(2) names in sandbox rules (e.g. allow/ioctl+KVM_*), fix for a trusted symlink bypass, new trusted feature to gate unsafe options which can circumvent the sandbox. Sydbox is a rock solid application kernel to sandbox applications on : https://gitlab.exherbo.org/sydbox/sydbox/-/blob/main/ChangeLog.md?ref_type=heads#3500