TechHacker Newsabout 3 hours ago
Postmortem for Kernel Soundness Bug #14576
1 min read
A soundness bug in the Lean kernel (#14576) was fixed after a fake Collatz disproof exploited nested inductive type handling. The bug, reachable only via metaprogramming, was patched in #14577. Independent checker nanoda had a separate bug, also fixed. New patch releases are out.
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