CVE-2024-37880
High
Description
The Kyber reference implementation before 9b8d306, when compiled by LLVM Clang through 18.x with some common optimization options, has a timing side channel that allows attackers to recover an ML-KEM 512 secret key in minutes. This occurs because poly_frommsg in poly.c does not prevent Clang from emitting a vulnerable secret-dependent branch.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPq-crystals Kyber
PublishedJun 10, 2024
First seenJun 10, 2024
Weakness typeCWE-203CWE-203
How to fix
Update
- pq-crystals kyber2024-06-03 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pq-crystals kyber | v < 2024-06-03 | 2024-06-03 |
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