rocq-cve-poc-21682

CVE-2026-72703 — Rocq Guard Checker Accepts Non-Terminating Fixpoint via Unchecked Cross-Calls Proving0 = 1 axiom-free via guard checker uniform parameter bypass. Vulnerability Summary The Rocq kernel's guard checker fixpoint termination verifier treats all parameters of a nested mutual fixpoint ...

CVE-2026-72704

The guard checker in Rocq Prover does not recheck the recursive tree representation of an inductive type parameter after that parameter has been changed by transport. A fixpoint may apply a rewrite along an equality between types to its recursive argument, which the guard checker accepts because...

EUVD-2026-65140

The guard checker in Rocq Prover does not recheck the recursive tree representation of an inductive type parameter after that parameter has been changed by transport. A fixpoint may apply a rewrite along an equality between types to its recursive argument, which the guard checker accepts because...

CVE-2026-72703 Rocq Prover 8.20 before 9.2.0 Guard Checker Accepts Non-Terminating Fixpoint via Unchecked Cross-Calls

The guard checker in Rocq Prover treats a parameter of a nested mutual fixpoint as uniform without examining calls between the different bodies of that fixpoint. finduniformparameters in kernel/inductive.ml inspects only self-recursive calls, so when no body calls itself the function concludes th...

PT-2026-81018

The guard checker in Rocq Prover does not recheck the recursive tree representation of an inductive type parameter after that parameter has been changed by transport. A fixpoint may apply a rewrite along an equality between types to its recursive argument, which the guard checker accepts because...