Linux Readying Spectre V2 Userspace-Userspace Protection

    Date26 Sep 2018
    CategoryLatest News
    2183
    Posted ByBrittany Day
    While the Linux kernel has been patched for months (and updated CPU microcode available) to mitigate Spectre Variant Two "Branch Target Injection" this has been focused on kernel-space protection while patches are pending now for userspace-userspace protection. Spectre V2 mitigation for application to application attacks hasn't been a priority since its more difficult to exploit due to ASLR (Address Space Layout Randomization). This protection is being worked on and these new patches enable app-to-app mitigation for Spectre Variant Two via IBPB (Indirect Branch Prediction Barrier) and STIBP (Single Thread Indirect Branch Predictors). This protection via the new Linux kernel patches is for both Intel and AMD CPUs.
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