Rustcrypto: >> Cmov >> 0.4.2 Security Vulnerabilities
RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in constant-time and not be rewritten as branches by the compiler. Prior to 0.4.4, the thumbv6m-none-eabi (Cortex M0, M0+ and M1) compiler emits non-constant time assembly when using cmovnz (portable version). This vulnerability is fixed in 0.4.4.
CVSS Score
9.8
EPSS Score
0.001
Published
2026-01-15