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2 vulnerabilities found for cmov by rustcrypto

CVE-2026-23519 (GCVE-0-2026-23519)

Vulnerability from nvd – Published: 2026-01-15 19:13 – Updated: 2026-01-15 19:57
VLAI?
Title
RustCrypto cmov: thumbv6m-none-eabi compiler emits non-constant time assembly when using cmovnz
Summary
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.
Severity ?
8.9 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Vendor Product Version
RustCrypto utils Affected: < 0.4.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-23519 (GCVE-0-2026-23519)

Vulnerability from cvelistv5 – Published: 2026-01-15 19:13 – Updated: 2026-01-15 19:57
VLAI?
Title
RustCrypto cmov: thumbv6m-none-eabi compiler emits non-constant time assembly when using cmovnz
Summary
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.
Severity ?
8.9 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
CWE
  • CWE-208 - Observable Timing Discrepancy
Assigner
References
Impacted products
Vendor Product Version
RustCrypto utils Affected: < 0.4.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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