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Linux 6.8.5 & Other Stable Kernel Updates Due To Native BHI Vulnerability
Due to yesterday's Native BHI vulnerability disclosure affecting all Intel processors with this variant of Branch History Injection (BHI) not requiring BPF to exploit, a slew of new Linux kernel stable releases are out today to back-port this security mitigation.
Due to yesterday's Native BHI vulnerability disclosure affecting all Intel processors with this variant of Branch History Injection (BHI) not requiring BPF to exploit, a slew of new Linux kernel stable releases are out today to back-port this security mitigation. Native BHI means that the branch history needs to be cleared for each system call entry and VM exit. The updated Linux kernel code allows controlling the Native BHI behavior with the new spectre_bhi= boot option.
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