xxhash-rust: Safe xxh3 custom-secret API accepts too-short secret in release
I have a minimized safe Rust witness for xxhash-rust 0.8.15. Safe public route: xxhash_rust::xxh3::xxh3_64_with_secret(&[0x41], &[]) The 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. Observed diagnostic: Undefined Behavior: constructing invalid value of type &[u8; 4]: encountered a dangling reference Local 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. Local artifacts: - vulnerable log: artifacts/logs/W-4332_xxhash_rust_short_secret_miri_release_linux_001.log - repair log: artifacts/logs/differentials/W-4332_xxhash_rust_local_repair_miri_release_linux_001.log - report: artifacts/reports/W-4332_xxhash_rust_short_secret_report.md
GHSA-6g2r-675j-hx59
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:GHSA-6g2r-675j-hx59
xxhash-rust
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 0.8.16
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "SEMVER",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.8.16"
}
]
}
],
"package": {
"name": "xxhash-rust",
"purl": "pkg:cargo/xxhash-rust",
"ecosystem": "crates.io"
},
"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"
}
}
]Publisher severity
low
Source reference: /database_specific/severity
- Event
- #71341 · Revision 1
- Added to Heist Feed
- Publisher date