Docker Engine 29.8.0 adds --umask and blocks a 32-bit sandbox-escape path

Docker Engine 29.8.0, released September 3, 2026, introduces a --umask flag to set a container’s file-creation mask and adds AppArmor/SELinux rules that block the 32-bit socketcall(2) path to AF_VSOCK. Upgrade if you share volumes between host and containers or harden your containers.