GHSA-5fhj-g3p3-pq9g
Suggest an improvement- Source
- https://github.com/advisories/GHSA-5fhj-g3p3-pq9g
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/07/GHSA-5fhj-g3p3-pq9g/GHSA-5fhj-g3p3-pq9g.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-5fhj-g3p3-pq9g
- Aliases
-
- CVE-2022-31146
- Published
- 2022-07-20T22:47:13Z
- Modified
- 2023-11-08T04:09:27.543738Z
- Severity
-
- 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L CVSS Calculator
- Summary
- Wasmtime vulnerable to Use After Free with `externref`s
- Details
-
There is a bug in Wasmtime's code generator, Cranelift, where functions using reference types may be incorrectly missing metadata required for runtime garbage collection (GC). This means that if a GC happens at runtime then the collector will mistakenly think some Wasm stack frames do not have live references to garbage collected values and therefore reclaim and deallocate them. The function can then subsequently continue to use the values, leading later to use-after-free bugs. This bug was introduced in Cranelift's migration to the
regalloc2register allocator in the Wasmtime 0.37.0 release on 2022-05-20. This bug has been patched and users should upgrade to Wasmtime version 0.38.2.Mitigations for this issue can be achieved by doing one of:
- Disabling the reference types proposal by passing
falsetowasmtime::Config::wasm_reference_types. - Downgrading to Wasmtime 0.36.0 or prior.
- Disabling the reference types proposal by passing
- Database specific
{ "nvd_published_at": "2022-07-21T04:15:00Z", "cwe_ids": [ "CWE-416" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2022-07-20T22:47:13Z" }- References
-
- https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-5fhj-g3p3-pq9g
- https://nvd.nist.gov/vuln/detail/CVE-2022-31146
- https://github.com/bytecodealliance/wasmtime/commit/2ba4bce5cc719e5a74e571a534424614e62ecc41
- https://github.com/WebAssembly/reference-types
- https://github.com/bytecodealliance/wasmtime
Affected packages
crates.io / wasmtime
Package
- Name
- wasmtime
- View open source insights on deps.dev
- Purl
- pkg:cargo/wasmtime
crates.io / cranelift-codegen
Package
- Name
- cranelift-codegen
- View open source insights on deps.dev
- Purl
- pkg:cargo/cranelift-codegen