RUSTSEC-2026-0126
AVX2 Implementation Did Not Fully Reduce Intermediate Values
- Severity
- Not rated yet
- No source has published a CVSS score yet
- Exploit chance (EPSS)
- —
- No score published
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- —
- Not classified
- Fix
0.0.9- Upgrade libcrux-ml-dsa to this version or later
Description
The AVX2 implementation of ML-DSA did not fully reduce intermediate inputs to the inverse NTT, which leads to a testable difference in panic behaviour of internal functions compared to the portable implementation.
Impact
We are not aware of inputs to the public key generation, signing or verification APIs that trigger a panic in the AVX2 implementation because the intermediate values were not fully reduced.
Mitigation
From version 0.0.9 intermediate values on AVX2 platforms are fully
reduced in alignment with the portable implementation.
Affected versions
crates.io
| Package | Vulnerable | Fixed in |
|---|---|---|
| libcrux-ml-dsa | >= 0.0.0-0, < 0.0.9 |
0.0.9 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
libcrux-ml-dsa crates.io → 0.0.9
- cargo
cargo update -p libcrux-ml-dsa --precise 0.0.9
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-fhvh-vw7h-9xf3 libcrux-ml-dsa: Signature Verification on AVX2 Platforms Mishandles Edge Case | High | Also affects libcrux-ml-dsa |
| RUSTSEC-2026-0076 libcrux: Panic in Signature Hint Decoding During Verification | High | Also affects libcrux-ml-dsa |
| GHSA-cp57-fq8g-qh6v libcrux has an Incorrect Check of Signer Response Norm During Verification | High | Also affects libcrux-ml-dsa |
| GHSA-2cgv-28vr-rv6j libcrux incorrectly calculates on aarch64 | High | Also affects libcrux-ml-dsa |
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