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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
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    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
    SSVC
    Exploitation: poc Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    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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