Yet another entry in the “why we can’t have nice things” category, Retbleed was announced this week, as yet another speculative execution vulnerability. This one is mitigated in hardware for AMD’s Zen 3 and Intel Generation 9 and later. For earlier devices the performance hit in mitigation is quite painful. What exactly makes this different from previous weaknesses, and why didn’t the previous mitigations cover this problem?
Continue reading “This Week In Security: Retbleed, Post-Quantum, Python-atomicwrites, And The Mysterious Cuteboi” →