PT-2026-41337 · Crates.Io · Libcrux-Ml-Dsa

Published 2026-05-05 · Updated 2026-05-05

OSV

CVSS v4.0

8.2

High

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

The AVX2 implementation of ML-DSA verification incorrectly implemented the use hint function, mishandling an edge case that should lead to signature rejection.

Impact

An attacker could make the ML-DSA verifier accept a crafted invalid signature under a maliciously generated verification key, if the AVX2 implementation is used.

Mitigation

From version 0.0.9 the edge case is handled correctly and invalid signatures are rejected.

Fix

Related Identifiers

RUSTSEC-2026-0125

Affected Products

Libcrux-Ml-Dsa

References · 6

• https://osv.dev/vulnerability/RUSTSEC-2026-0125 · Vendor Advisory
• https://github.com/C2SP/wycheproof/pull/234 · Note
• https://github.com/tink-crypto/tink-go/pull/48 · Note
• https://github.com/cryspen/libcrux/pull/1398 · Note
• https://rustsec.org/advisories/RUSTSEC-2026-0125.html · Note
• https://crates.io/crates/libcrux-ml-dsa · Note