The patch itself isn't related to MPTCP, but the bug is hard to exploit. AFAIK, Anthropic is the only ones who claimed exploitation using their unlimited frontier models without safety restrictions. So non-MPTCP configurations may also be vulnerable, but exploiting them could require even more resources. I've tried to trigger KASAN using Qwen 3.8 27B @ local RTX3090 - no success after 96 hours.