{"schema_version":"1.9.0","id":"RUSTSEC-2022-0075","published":"2022-11-10T12:00:00Z","modified":"2026-10-12T18:00:05.117534654Z","aliases":["CVE-2022-39393","GHSA-wh6w-3828-g9qf","RUSTSEC-2022-0098"],"summary":"Bug in pooling instance allocator","details":"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.\n\nMitigations are described [here](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wh6w-3828-g9qf).","affected":[{"package":{"name":"wasmtime","ecosystem":"crates.io","purl":"pkg:cargo/wasmtime"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"},{"fixed":"1.0.2"},{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}],"ecosystem_specific":{"affected_functions":null,"affects":{"arch":[],"functions":[],"os":[]}},"database_specific":{"categories":["memory-exposure"],"cvss":null,"informational":null,"source":"https://github.com/rustsec/advisory-db/blob/osv/crates/RUSTSEC-2022-0075.json"}}],"references":[{"type":"PACKAGE","url":"https://crates.io/crates/wasmtime"},{"type":"ADVISORY","url":"https://rustsec.org/advisories/RUSTSEC-2022-0075.html"},{"type":"WEB","url":"https://github.com/bytecodealliance/wasmtime/commit/2614f2e9d2d36805ead8a8da0fa0c6e0d9e428a0"},{"type":"WEB","url":"https://github.com/bytecodealliance/wasmtime/commit/2614f2e9d2d36805ead8a8da0fa0c6e0d9e428a0"},{"type":"WEB","url":"https://github.com/bytecodealliance/wasmtime/commit/3535acbf3be032ef1ba0b469b8ab92538a8a18a6"}],"database_specific":{"license":"CC0-1.0"}}