What is CVE-2022-31146?

CVE-2022-31146 is a medium-severity vulnerability in Bytecodealliance Wasmtime, classified under Use After Free. CVSS score: 6.4/10. Published 2022-07-20.

How severe is CVE-2022-31146?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Use After Free in Bytecodealliance Wasmtime

CVE-2022-31146

Wasmtime is a standalone runtime for WebAssembly. There is a bug in the Wasmtime's code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection. This means tha…

Vulnerability class: Use-After-Free

EPSS: 0.004 (62.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L.

Affected products

Bytecodealliance Wasmtime — versions >= 0.37.0, < 0.38.2, >= 0.84.0, < 0.85.2

Weakness classification (CWE)

CWE-416 — Use After Free

References

github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5fhj-g3p3-pq9g (x_refsource_CONFIRM)
github.com/WebAssembly/reference-types (x_refsource_MISC)
github.com/bytecodealliance/wasmtime/ (x_refsource_MISC)

Frequently asked questions

What is CVE-2022-31146?: CVE-2022-31146 is a medium-severity vulnerability in Bytecodealliance Wasmtime, classified under Use After Free. CVSS score: 6.4/10. Published 2022-07-20.
How severe is CVE-2022-31146?: Medium severity. CVSS v3 base score is 6.4 out of 10.