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The latest jit news, distilled by AI into sharp ~100-word summaries. ByteBrief tracks jit across dozens of tech sources and brings you only what matters, updated hourly. Tap any story for the full brief, or open the original source.
Researchers disclosed Branch Target Reuse, a Spectre-v2 attack exploiting stale branch predictor entries in JIT compilers. They built end-to-end exploits against Linux cBPF, leaking 8 bytes per second and extracting the root password hash on Intel CPUs, bypassing all mitigations. Firefox's SpiderMonkey and Oracle's GraalVM are also affected. Linux and Oracle deployed fixes; Mozilla prioritizes site isolation.
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