GHSA-2cgv-28vr-rv6j
libcrux incorrectly calculates on aarch64
On platforms without the core::arch::aarch64::vxarq_u64 intrinsic, an unverified fallback in libcrux-intrinsics v0.0.3
passed incorrect arguments and produced wrong results. This corrupted SHA-3 digests and caused libcrux-ml-kem and
libcrux-ml-dsa to sample incorrectly, yielding incorrect shared secrets and invalid signatures.
The issue has been fixed in v0.0.4.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
What each source reports
GitHub Advisories Score used
libcrux incorrectly calculates on aarch64
On platforms without the core::arch::aarch64::vxarq_u64 intrinsic, an unverified fallback in libcrux-intrinsics v0.0.3
passed incorrect arguments and produced wrong results. This corrupted SHA-3 digests and caused libcrux-ml-kem and
libcrux-ml-dsa to sample incorrectly, yielding incorrect shared secrets and invalid signatures.
The issue has been fixed in v0.0.4.
- Record
GHSA-2cgv-28vr-rv6j- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-200, CWE-327
- Updated
- 2026-11-02
OSV
libcrux incorrectly calculates on aarch64
On platforms without the core::arch::aarch64::vxarq_u64 intrinsic, an unverified fallback in libcrux-intrinsics v0.0.3
passed incorrect arguments and produced wrong results. This corrupted SHA-3 digests and caused libcrux-ml-kem and
libcrux-ml-dsa to sample incorrectly, yielding incorrect shared secrets and invalid signatures.
The issue has been fixed in v0.0.4.
- Record
GHSA-2cgv-28vr-rv6j- CVSS 4.0
- 8.8 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-200, CWE-327
- Updated
- 2026-11-02
OSVRUSTSEC-2025-0133No score
Incorrect calculation on aarch64
On platforms without the core::arch::aarch64::vxarq_u64 intrinsic, an unverified fallback in libcrux-intrinsics v0.0.3
passed incorrect arguments and produced wrong results. This corrupted SHA-3 digests and caused libcrux-ml-kem and
libcrux-ml-dsa to sample incorrectly, yielding incorrect shared secrets and invalid signatures.
The issue has been fixed in v0.0.4.
- Record
RUSTSEC-2025-0133- Updated
- 2026-11-02
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libcrux-intrinsicscrates.io | 0.0.3 to 0.0.3 | 0.0.4 |
libcrux-ml-kemcrates.io | 0.0.3 to 0.0.3 | 0.0.4 |
libcrux-ml-dsacrates.io | 0.0.3 to 0.0.3 | 0.0.4 |
libcrux-intrinsicscrates.io | 0.0.3 up to 0.0.4 | 0.0.4 |
libcrux-ml-kemcrates.io | 0.0.3 up to 0.0.4 | 0.0.4 |
libcrux-ml-dsacrates.io | 0.0.3 up to 0.0.4 | 0.0.4 |
libcrux-intrinsicscrates.io | 0.0.4-0 up to 0.0.4 | 0.0.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | GitHub Advisories, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
GHSA-2cgv-28vr-rv6j is a high vulnerability (CVSS 8.8) in libcrux-intrinsics, published December 4, 2025. No source lists public exploit code. Fixed in libcrux-intrinsics 0.0.4.