New TONTOU CPU attack bypasses Spectre v2 fixes, leaks Linux password hashes

Researchers found a way to bypass recent mitigations for Spectre v2 speculative execution side-channel attacks and developed an exploit to leak secrets from Linux machines. [...]

source https://www.bleepingcomputer.com/news/security/new-tontou-cpu-attack-bypasses-spectre-v2-fixes-leaks-linux-password-hashes/