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


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.23% (63rd percentile)

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  • Snyk IDSNYK-RUST-CRANELIFTCODEGEN-2957525
  • published21 Jul 2022
  • disclosed20 Jul 2022
  • creditAlex Crichton, Nick Fitzgerald, Jamey Sharp

Introduced: 20 Jul 2022

CVE-2022-31146  (opens in a new tab)
CWE-416  (opens 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

CVSS Scores

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