An unprivileged Linux program can time a hardware interrupt to land in the gap between a processor sanitizing its branch predictor and the kernel using it, repoisoning the predictor after the defense has run. MIT CSAIL researchers Danil Trujillo and Mengjia Yan named the technique INTERRUPT INJECTION. On an AMD Zen 2 machine running Linux 6.14 with every default Spectre v2 mitigation on,.📖 Read more.
🔗 Via "The Hacker News"
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👁️ Seen on @cibsecurity