{"id":"GHSA-6g2r-675j-hx59","summary":"xxhash-rust: Safe xxh3 custom-secret API accepts too-short secret in release","details":"I have a minimized safe Rust witness for xxhash-rust 0.8.15.\n\nSafe public route:\n\nxxhash_rust::xxh3::xxh3_64_with_secret(&[0x41], &[])\n\nThe caller-side harness contains no unsafe code. Under release execution, the internal minimum custom-secret length predicate is enforced only by debug_assert!. Release-Miri reports construction of a fixed-width reference beyond the empty secret allocation.\n\nObserved diagnostic:\n\nUndefined Behavior: constructing invalid value of type &[u8; 4]: encountered a dangling reference\n\nLocal repair evidence: handling custom-secret slices shorter than the internal minimum before fixed-width secret reads makes the same safe short-secret harness pass under Linux release-Miri.\n\nLocal artifacts:\n- vulnerable log: artifacts/logs/W-4332_xxhash_rust_short_secret_miri_release_linux_001.log\n- repair log: artifacts/logs/differentials/W-4332_xxhash_rust_local_repair_miri_release_linux_001.log\n- report: artifacts/reports/W-4332_xxhash_rust_short_secret_report.md","modified":"2026-10-02T18:45:09.257761260Z","published":"2026-10-02T18:29:13Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-10-02T18:29:13Z","nvd_published_at":null,"cwe_ids":["CWE-125"],"severity":"LOW"},"references":[{"type":"WEB","url":"https://github.com/DoumanAsh/xxhash-rust/security/advisories/GHSA-6g2r-675j-hx59"},{"type":"WEB","url":"https://github.com/DoumanAsh/xxhash-rust/commit/200cadb1a442c7f6cd9747e7d4297379b6b74200"},{"type":"PACKAGE","url":"https://github.com/DoumanAsh/xxhash-rust"}],"affected":[{"package":{"name":"xxhash-rust","ecosystem":"crates.io","purl":"pkg:cargo/xxhash-rust"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.8.16"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-6g2r-675j-hx59/GHSA-6g2r-675j-hx59.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N"}]}