The Go project reports:
The go command may execute arbitrary code at build time when cgo is
in use on Windows. This may occur when running "go get", or
any other command that builds code. Only users who build untrusted
code (and don't execute it) are affected. In addition to Windows
users, this can also affect Unix users who have "." listed
explicitly in their PATH and are running "go get" or build
commands outside of a module or with module mode disabled.
The P224() Curve implementation can in rare circumstances generate
incorrect outputs, including returning invalid points from
ScalarMult. The crypto/x509 and golang.org/x/crypto/ocsp (but not
crypto/tls) packages support P-224 ECDSA keys, but they are not
supported by publicly trusted certificate authorities. No other
standard library or golang.org/x/crypto package supports or uses the
P-224 curve.