see the [runtime documentation](/pkg/runtime#hdr-Environment_Variables)
and the [go command documentation](/cmd/go#hdr-Build_and_test_caching).
+### Go 1.22
+
+Go 1.22 adds a configurable limit to control the maximum acceptable RSA key size
+that can be used in TLS handshakes, controlled by the [`tlsmaxrsasize`setting](/pkg/crypto/tls#Conn.Handshake).
+The default is tlsmaxrsasize=8192, limiting RSA to 8192-bit keys. To avoid
+denial of service attacks, this setting and default was backported to Go
+1.19.13, Go 1.20.8, and Go 1.21.1.
+
### Go 1.21
Go 1.21 made it a run-time error to call `panic` with a nil interface value,