PT-2026-111188
Published
2026-10-02
·
Updated
2026-10-02
Description by
CVSS 3.1
2.3
LowMetricsAV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
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
Found an issue in the description? Have something to add? Feel free to write us 👾