In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash.
https://github.com/openbsd/src/commit/c06199859734d958552a581d72b4c0f910e68d7c
https://ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/006_wg.patch.sig
https://ftp.openbsd.org/pub/OpenBSD/patches/7.5/common/015_wg.patch.sig