{"id":"GHSA-fhvh-vw7h-9xf3","aliases":["RUSTSEC-2026-0125"],"url":"https://o3.security/vulnerability/GHSA-fhvh-vw7h-9xf3","summary":" libcrux-ml-dsa: Signature Verification on AVX2 Platforms Mishandles Edge Case","details":"The AVX2 implementation of ML-DSA verification incorrectly implemented\nthe `use_hint` function, mishandling an edge case that should lead to\nsignature rejection.\n\n## Impact\nAn attacker could make the ML-DSA verifier accept a crafted invalid\nsignature under a maliciously generated verification key, if the AVX2\nimplementation is used.\n\n## Mitigation\nFrom version `0.0.9` the edge case is handled correctly and invalid\nsignatures are rejected.","published":"2026-05-19T16:18:53Z","modified":"2026-05-20T07:26:23.879990746Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"libcrux-ml-dsa","fixedVersion":"0.0.9"}],"fix":{"url":"https://github.com/C2SP/wycheproof/pull/234","label":"C2SP/wycheproof#234"},"references":[{"type":"WEB","url":"https://github.com/C2SP/wycheproof/pull/234"},{"type":"WEB","url":"https://github.com/cryspen/libcrux/pull/1398"},{"type":"WEB","url":"https://github.com/tink-crypto/tink-go/pull/48"},{"type":"PACKAGE","url":"https://github.com/cryspen/libcrux"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2026-0125.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-05-20T07:26:23.879990746Z"}}