GHSA-xrf2-5r3p-5wgj
Suggest an improvement- Source
- https://github.com/advisories/GHSA-xrf2-5r3p-5wgj
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-xrf2-5r3p-5wgj/GHSA-xrf2-5r3p-5wgj.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-xrf2-5r3p-5wgj
- Aliases
- Published
- 2026-03-26T17:58:16Z
- Modified
- 2026-03-27T06:11:21Z
- Severity
-
- 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- libcrux: Panic in Signature Hint Decoding During Verification
- Details
-
During ML-DSA verification the serialized hint values are decoded as specified in algorithm 22
HintBitUnpackof FIPS 204, subsection 7.1. The algorithm requires that the cumulative hint counters per row of the hint vector are strictly increasing and below a maximum value which depends on the choice of ML-DSA parameter set (line 4).In libcrux-ml-dsa, hint decoding did not check the boundedness of the cumulative hint counter of the last row of the hint vector.
Impact
A manipulated invalid hint can cause an out-of-bounds memory access since the hint decoding logic may attempt to read outside the bounds of the serialized signature, causing a runtime panic.
Mitigation
Starting from version
0.0.8, hint decoding will check the cumulative hint counter of the last row as well. - Database specific
{ "cwe_ids": [ "CWE-125", "CWE-1285" ], "github_reviewed": true, "github_reviewed_at": "2026-03-26T17:58:16Z", "nvd_published_at": null, "severity": "HIGH" }- References
Affected packages
crates.io / libcrux-ml-dsa
Package
- Name
- libcrux-ml-dsa
- View open source insights on deps.dev
- Purl
- pkg:cargo/libcrux-ml-dsa