Incorrect Calculation Affecting wasmtime package, versions <0.38.1



    Attack Complexity High
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5.6 medium

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  • Snyk ID SNYK-RUST-WASMTIME-2936436
  • published 28 Jun 2022
  • disclosed 28 Jun 2022
  • credit alexcrichton

How to fix?

Upgrade wasmtime to version 0.38.1 or higher.


Affected versions of this package are vulnerable to Incorrect Calculation due to incorrect semantics implementation of the i8x16.swizzle and select WebAssembly instructions.

Note: The impact of this is benign for hosts running WebAssembly but represents possible vulnerabilities within the execution of a guest program. The select instruction is only affected when the inputs are of v128 type. The aarch64 implementation of the simd proposal is not affected.