![]() ![]() Spectre-BTB-SA-IP and Spectre-BTB-SA-OP.Spectre-PHT-CA-OP, Spectre-PHT-CA-IP and Spectre-PHT-SA-OP.Here are some of the most significant hardware-related vulnerabilities, discovered both before and after Meltdown: In either case, patching is not straightforward, so such flaws can continue to impact real world devices for a very long time. Some hardware vulnerabilities are impossible to mitigate completely without releasing a new generation of components, while others can be fixed in firmware, the low-level programming present in hardware chips. Since then, many researchers, both from academia and the private sector, have been studying the low-level operation of CPUs and other hardware components and have been uncovering more and more issues. Meltdown and Spectre were certainly not the first vulnerabilities to result from a hardware design decision, but their widespread impact sparked the interest of the security research community into such flaws. The flaws stemmed from a performance feature of modern CPUs known as speculative execution and mitigating them required one of the biggest patch coordination efforts in history, involving CPU makers, device manufacturers and operating system vendors. We recommend upgrading to Kernel 6.In January 2018, the entire computer industry was put on alert by two new processor vulnerabilities dubbed Meltdown and Spectre that defeated the fundamental OS security boundaries separating kernel and user space memory. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past commit 2e7eab81425aĪ regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. 9:15:09 PM ActionĪ regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. ![]() Record truncated, showing 500 of 543 characters. ![]() Modified Analysis by NIST 2:56:16 PM Action
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