CVE-2022-31146: RUSTSEC-2022-0100 - Use After Free with `externref`s in Wasmtime

Quick answers

Is CVE-2022-31146 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2022-31146 being exploited in the wild.

How severe is CVE-2022-31146?

Low severity, with a CVSS score of 3.1, published 12 July 2022.

Which products and versions are affected?

cranelift-codegen (crates.io) SEMVER:introduced=0.84.0,fixed=0.85.2; wasmtime (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.38.2, SEMVER:introduced=0.37.0,fixed=0.38.2.

Is there a fix for CVE-2022-31146?

Yes. cranelift-codegen (crates.io): upgrade to 0.85.2 or later; wasmtime (crates.io): upgrade to 0.38.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2022-31146?

Check whether you run cranelift-codegen (crates.io) or wasmtime (crates.io) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

• cranelift-codegen (crates.io): upgrade to 0.85.2 or later

  cargo update -p cranelift-codegen

• wasmtime (crates.io): upgrade to 0.38.2 or later

  cargo update -p wasmtime

Affected products

• cranelift-codegen (crates.io) SEMVER:introduced=0.84.0,fixed=0.85.2
• wasmtime (crates.io) SEMVER:introduced=0.0.0-0,fixed=0.38.2, SEMVER:introduced=0.37.0,fixed=0.38.2

Identifiers

• CVE-2022-31146
• GHSA-5fhj-g3p3-pq9g
• RUSTSEC-2022-0100