Use After Free Affecting wasmtime package, versions >=0.37.0 <0.38.2
Threat Intelligence
EPSS
0.23% (62nd
percentile)
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Test your applications- Snyk ID SNYK-RUST-WASMTIME-2957524
- published 21 Jul 2022
- disclosed 20 Jul 2022
- credit Alex Crichton, Nick Fitzgerald, Jamey Sharp
Introduced: 20 Jul 2022
CVE-2022-31146 Open this link in a new tabHow to fix?
Upgrade wasmtime to version 0.38.2 or higher.
Overview
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
version 3.1