A software developer has uncovered a security flaw in Apple's vaunted M1 SoC. The only fix for the issue would be for Apple to redesign the chip although the chances of the vulnerability being exploited maliciously are low.
https://www.notebookcheck.net/Apple-s-M1-chip-has-an-unfixable-security-flaw-baked-into-the-silicon.541583.0.html