Source: The Hackernews

The latest update from the OpenSSH developers resolves this issue by introducing a new security feature that encrypts private keys before storing them into the system memory, protecting it against almost all types of side-channel attacks

In recent years, several groups of cybersecurity researchers have disclosed dozens of memory side-channel vulnerabilities in modern processors and DRAMs, like Rowhammer, RAMBleed, Spectre, and Meltdown.

Read more here