rocq-cve-poc-21683

CVE-2026-72705 — Rocq Guard Checker Accepts Fixpoint Passed as Higher-Order Argument Proving0 = 1 axiom-free via Russell's paradox through guard checker fixpoint bypass. Discovered autonomously by Claude Opus 4.6 Anthropic. Field| Value ---|--- Bug report| rocq-prover/rocq21683 Fix| PR 21684...

rocq-cve-poc-22024

CVE-2026-72704 — Rocq Guard Checker Trusts Corrupted Recursive Tree After Transport Proving0 = 1 from consistent axioms via guard checker fixpoint rectree corruption. Field| Value ---|--- Bug report| rocq-prover/rocq22024 Fix| PR 22027 open Affected| Rocq ≤ 9.2.0 / Coq 8.x all versions with guard...

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 ...

Rocq Prover 9.1.0 Higher Order Fixpoint Guard Checker Bypass

Rocq Prover version 9.1.0 and earlier contain a kernel soundness vulnerability in the termination guard checker. The checker incorrectly accepts recursive functions passed as higher order arguments to other fixpoints, allowing recursive calls on values that are not structurally decreasing. This...

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Rocq Prover versions up to and including 9.2.0 contain a kernel soundness vulnerability in the termination guard checker. Recursive functions involving type transport through the rew construct can corrupt the internal recursive argument tree representation, allowing subsequent fixpoints to be...

Rocq Prover 9.1 Guard Checker Bypass Proof of Concept

Rocq Prover versions 8.20 through 9.1 contain a kernel soundness vulnerability in the termination guard checker. The finduniformparameters function fails to examine cross-calls between nested mutually recursive fixpoints, incorrectly treating changing parameters as uniform and accepting recursive...

CVE-2026-72705

A flaw was found in Rocq Prover. The guard checker component fails to properly track recursive calls when a fixpoint passes itself as a higher-order argument to another fixpoint. This oversight allows for the creation of a type that is logically equivalent to its own negation, which can lead to t...

CVE-2026-72703

A flaw was found in Rocq Prover. The guard checker incorrectly processes parameters of nested mutual fixpoints when cross-calls occur between different bodies of the fixpoint. This oversight allows the system to accept non-terminating definitions as structurally decreasing. This critical logical...

CVE-2026-72705

The guard checker in Rocq Prover does not follow recursive calls made through a fixpoint's own arguments. A fixpoint may pass itself as a higher-order argument to a second fixpoint, which then applies it to a value that is not a subterm of the structural argument. Passing the recursive function t...

CVE-2026-72703

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...

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...

CVE-2026-72705 Rocq Prover before 9.2.0 Guard Checker Accepts Fixpoint Passed as a Higher-Order Argument

The guard checker in Rocq Prover does not follow recursive calls made through a fixpoint's own arguments. A fixpoint may pass itself as a higher-order argument to a second fixpoint, which then applies it to a value that is not a subterm of the structural argument. Passing the recursive function t...

CVE-2026-72705

CVE-2026-72705 is a soundness flaw in the guard checker of Rocq Prover (before 9.2.0). The checker fails to track recursive calls when a fixpoint passes itself as a higher-order argument to another fixpoint, which then applies it to a non-subterm value. This admits a type definitionally equal to ...

CVE-2026-72705 Rocq Prover before 9.2.0 Guard Checker Accepts Fixpoint Passed as a Higher-Order Argument

The guard checker in Rocq Prover does not follow recursive calls made through a fixpoint's own arguments. A fixpoint may pass itself as a higher-order argument to a second fixpoint, which then applies it to a value that is not a subterm of the structural argument. Passing the recursive function t...

CVE-2026-72705 Rocq Prover before 9.2.0 Guard Checker Accepts Fixpoint Passed as a Higher-Order Argument

The guard checker in Rocq Prover does not follow recursive calls made through a fixpoint's own arguments. A fixpoint may pass itself as a higher-order argument to a second fixpoint, which then applies it to a value that is not a subterm of the structural argument. Passing the recursive function t...

EUVD-2026-65141

The guard checker in Rocq Prover does not follow recursive calls made through a fixpoint's own arguments. A fixpoint may pass itself as a higher-order argument to a second fixpoint, which then applies it to a value that is not a subterm of the structural argument. Passing the recursive function t...

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-2026-72704 Rocq Prover through 9.2.0 Guard Checker Trusts Corrupted Recursive Tree After Transport

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-2026-72704 Rocq Prover through 9.2.0 Guard Checker Trusts Corrupted Recursive Tree After Transport

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-2026-72704

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...