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crates.io package

simd-json-derive

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Medium, CVSS 6.6crates.ioPublished

    simd-json-derive vulnerable to MaybeUninit misuse

    GHSA-pqpw-89w5-82v5

    Affected
    • crates.io simd-json-derive < 0.12.0
    Fixed in
    0.12.0· Vendor fix available
    Issue
    An invalid use of MaybeUninit::uninit().assumeinit() in simd-json-derive's derive macro can cause undefined behavior. The original code used MaybeUninit to avoid initialisation of the struct and then set the fields using ptr::write. The undefined behavior triggered by this misuse of MaybeUninit can lead to invlaid memory access and panics in binaries compiled in release mode (aka simd-json-derive prior to version 0.12 has UB and optimizes into some nonsense) The version 0.12.0 removes this section of code, avoiding the use of MaybeUninit alltogether.

    Recommended action: Upgrade to 0.12.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →