Errata patches for the wireless stack have been released for OpenBSD 6.1 and 6.0.
State transition errors could cause reinstallation of old WPA keys. Binary updates for the amd64 and i386 platforms 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.