{"id":"CVE-2022-39393","revision":"df01b87e3f194a8fb1d3f1c73a8d6759","records":[{"revision":"df01b87e3f194a8fb1d3f1c73a8d6759","observedAt":"2026-10-24T21:17:10.699+00:00","statement":{"source":"nvd","id":"CVE-2022-39393","aliases":[],"title":"Wasmtime is a standalone runtime for WebAssembly. Prior to versions 2.0.2 and 1.0.2, there is a bug in Wasmtime's implementation of its pooling instance allocator where when a linear memory is reused for another instance the initial heap sn…","description":"Wasmtime is a standalone runtime for WebAssembly. Prior to versions 2.0.2 and 1.0.2, there is a bug in Wasmtime's implementation of its pooling instance allocator where when a linear memory is reused for another instance the initial heap snapshot of the prior instance can be visible, erroneously to the next instance. This bug has been patched and users should upgrade to Wasmtime 2.0.2 and 1.0.2. Other mitigations include disabling the pooling allocator and disabling the `memory-init-cow`.","state":0,"publishedAt":"2022-11-10T20:15:11.52+00:00","modifiedAt":"2026-06-17T04:58:16.347+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","score":8.6,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","score":8.6,"severity":"HIGH"}],"references":["https://github.com/bytecodealliance/wasmtime/commit/2614f2e9d2d36805ead8a8da0fa0c6e0d9e428a0","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wh6w-3828-g9qf"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-39393","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-226","CWE-212"],"productCriteria":["cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*"],"sourceDates":{"published":"2022-11-10T20:15:11.520","lastModified":"2026-06-17T04:58:16.347"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2022-39393","identifiers":["CVE-2022-39393"]},"retained":false,"historicalAffected":[]}],"coverage":[]}