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Use After Free Affecting cranelift-codegen package, versions >=0.84.0 <0.85.2

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    EPSS 0.28% (69th percentile)
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NVD
8.8 high

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  • Snyk ID SNYK-RUST-CRANELIFTCODEGEN-2957525
  • published 21 Jul 2022
  • disclosed 20 Jul 2022
  • credit Alex Crichton, Nick Fitzgerald, Jamey Sharp
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Introduced: 20 Jul 2022

CVE-2022-31146 Open this link in a new tab
CWE-416 Open this link in a new tab

How to fix?

Upgrade cranelift-codegen to version 0.85.2 or higher.

Overview

cranelift-codegen is a translates code from an intermediate representation into executable machine code.

Affected versions of this package are vulnerable to Use After Free in the runtime garbage collector. When a host passes non-null externrefs to WebAssembly, garbage collection is triggered, while active Wasm frames remain on the stack. Live references from these frames can be reclaimed and reallocated.

Note: This vulnerability can be worked around by passing false to wasmtime::Config::wasm_reference_types.

References