An errata patch for the kernel has been released for OpenBSD 6.9 and OpenBSD 7.0.
The kernel could leak memory when closing unix sockets. Binary updates for the amd64, i386 and arm64 platform are available via the syspatch utility. Source code patches can be found on the respective errata page: https://www.openbsd.org/errata69.html https://www.openbsd.org/errata70.html