A v.2 Spectre bug bug, with the potential to leak your data, has been found. Intel and ARM have been issuing advisories and statements on how it impacts their silicon chip processors. This new bug bypasses recent changes at the silicon level in their CPUs, implemented to address Spectre.
Intel, Arm hit with another data-leaking Spectre chip bug • The Register
Branch History Injection and Intra-mode Branch Target Injection (intel.com)