NettetThe branch target injection exploit targets a processor’s indirect branch predictor. Direct branches occur when the destination of the branch is known from the instruction alone. Indirect branches 1 , on the other hand, occur when the destination of the branch is not contained in the instruction itself, such as when the destination is read from a register … Nettet14. apr. 2024 · On Thursday, Eduardo (sirdarckcat) Vela Nava, from Google's product security response team, disclosed a Spectre-related flaw in version 6.2 of the Linux kernel. The bug, designated medium severity, was initially reported to cloud service providers - those most likely to be affected - on December 31, 2024, and was patched …
Linux kernel logic allowed Spectre attack on
Nettet29. mar. 2024 · Researchers from four universities discovered a new vulnerability in Intel’s processors dubbed as BranchScope. The problem resides in the method a processor … Nettet8. mar. 2024 · Branch History Injection (BHI) describes a specific form of intra-mode BTI (bug CVE-2024-0001 ), where an unprivileged attacker may manipulate branch history before transitioning to supervisor or VMX root mode in an effort to cause an indirect branch predictor to select a specific predictor entry for an indirect branch, and a … rcw 9.94a.701 3 a
Branch Prediction under Scrutiny for Possible Security Flaw
Intel reported that they were preparing new patches to mitigate these flaws. Affected are all Core i Series processors and Xeon derivates since Nehalem (2010) and Atom-based processors since 2013. Intel postponed their release of microcode updates to 10 July 2024. Se mer Spectre refers to one of the two original transient execution CPU vulnerabilities (the other being Meltdown), which involve microarchitectural timing side-channel attacks. These affect modern microprocessors that … Se mer In 2002 and 2003, Yukiyasu Tsunoo and colleagues from NEC showed how to attack MISTY and DES symmetric key ciphers, respectively. In 2005, Se mer As of 2024, almost every computer system is affected by Spectre, including desktops, laptops, and mobile devices. Specifically, Spectre has been shown to work on Intel, AMD, ARM-based, and IBM processors. Intel responded to the reported security vulnerabilities with an … Se mer • Row hammer • SPOILER (security vulnerability) Se mer Spectre is a vulnerability that tricks a program into accessing arbitrary locations in the program's memory space. An attacker may read the … Se mer Since Spectre represents a whole class of attacks, most likely, there cannot be a single patch for it. While work is already being done to … Se mer • ARM: Se mer Nettet15. aug. 2024 · Researchers discovered the first Foreshadow flaw earlier this year. This flaw also affected Intel's SGX, which is a security feature that allows app developers … NettetInstead of attempting to manage or predict its behavior, a . retpoline. is a method to . bypass. the indirect branch predictor. Refer to . Figure 1. and Figure 2 for the flow of indirect-branch prediction before and after retpoline is implemented. Prediction of RET instructions differs from JMP and CALL instructions because RET rcw 9.94a and 9.94a.745