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Branch Target Reuse: Spectre-v2 Attacks in JIT Engines

Lobsters Hottest ↗ · 2026-09-30 Cached

VUSec presents Branch Target Reuse (BTR), a new Spectre-v2 attack exploiting stale branch predictor entries in JIT engines (cBPF, GraalVM, SpiderMonkey) across Intel, AMD, and ARM CPUs, including an end-to-end Linux kernel exploit that bypasses existing mitigations to leak kernel memory.

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#cpu-security

Spaghettifying DRAM

Hacker News Top ↗ · 2026-08-13 Cached

A security research tool that exploits DRAM address scrambling on AMD CPUs to unlock hidden platform features such as PSP, SMM, C6, and microcode, demonstrating a deep hardware-level attack.

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#cpu-security

Hardware backdoors in some x86 CPUs

Hacker News Top ↗ · 2026-08-08 Cached

Security researcher Domas reveals rosenbridge, a hardware backdoor in VIA C3 x86 CPUs that allows unprivileged code to bypass processor protections and access kernel memory. The repository provides tools to check for and mitigate the vulnerability.

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