Errata patches have been released for OpenBSD 6.1 and 6.0. Out of bounds TCB settings may result in a kernel panic.
Binary updates for the amd64 platform are available via the syspatch utility. Source code patches can be found on the respective errata pages: https://www.openbsd.org/errata60.html https://www.openbsd.org/errata61.html As this affects the kernel, a reboot will be needed after patching.
