CVE-2024-37880

2024-06-1000:00:00

mitre

www.cve.org

kyber

timing side channel

vulnerability

llvm clang

optimization

ml-kem 512

secret key

0.001 Low

EPSS

Percentile

27.2%

JSON

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.