{"schemaVersion":3,"id":"CVE-2025-64345","aliases":["UBUNTU-CVE-2025-64345","DEBIAN-CVE-2025-64345","CGA-2fxw-3j94-ch8g","CGA-33g7-jpwc-94ch","CGA-642x-g4rq-vc5p","CGA-6wfj-jc8g-6wrq","CGA-7254-cfg2-wcfv","CGA-7wj2-xgvv-686r","CGA-826p-46c5-mgx6","CGA-87gw-825p-rrw2","CGA-9h23-h988-7ggr","CGA-f2g5-5r2q-cvxc","CGA-gfwj-p5xg-8x2v","CGA-m59v-5prv-pv8h","CGA-vjh3-5hpq-76r7","CGA-vp82-f366-rxvf","GHSA-hc7m-r6v8-hg9q","RUSTSEC-2025-0118"],"status":"published","duplicateOf":null,"title":null,"description":"Wasmtime is a runtime for WebAssembly. Prior to version 38.0.4, 37.0.3, 36.0.3, and 24.0.5, Wasmtime's Rust embedder API contains an unsound interaction where a WebAssembly shared linear memory could be viewed as a type which provides safe access to the host (Rust) to the contents of the linear memory. This is not sound for shared linear memories, which could be modified in parallel, and this could lead to a data race in the host. Patch releases have been issued for all supported versions of Wasmtime, notably: 24.0.5, 36.0.3, 37.0.3, and 38.0.4. These releases reject creation of shared memories via `Memory::new` and shared memories are now excluded from core dumps. As a workaround, eembeddings affected by this issue should use `SharedMemory::new` instead of `Memory::new` to create shared memories. Affected embeddings should also disable core dumps if they are unable to upgrade. Note that core dumps are disabled by default but the wasm threads proposal (and shared memory) is enabled by default.","dates":{"published":"2025-11-12T21:25:50.832Z","modified":"2025-11-12T21:40:37.909Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":1.8,"severity":"low","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":0.8,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":0.8,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":0.8,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":0.8,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Crates.io","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":0.8,"impact":2.3,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":1.8,"severity":"low","vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00116,"percentile":0.01513,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.008,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00108},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00116,"percentile":0.01513}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00108,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00116,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00116,"percentile":0.01513}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')","description":"The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/362.html"}],"affected":[{"vendor":"chainguard","product":"wash","name":"wash","label":"wash","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/wash","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"chainguard","product":"wasmcloud","name":"wasmcloud","label":"wasmcloud","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/wasmcloud","purlType":"apk","versions":[{"text":"< 1.9.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.9.1-r0","eol":null,"hubHref":null},{"vendor":"chainguard","product":"wizer","name":"wizer","label":"wizer","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/wizer","purlType":"apk","versions":[{"text":"< 10.0.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.0-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"yara-x","name":"yara-x","label":"yara-x","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/yara-x","purlType":"apk","versions":[{"text":"< 1.9.0-r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.9.0-r2","eol":null,"hubHref":null},{"vendor":"chainguard","product":"zed","name":"zed","label":"zed","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/zed","purlType":"apk","versions":[{"text":"< 0.228.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.228.0-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"zellij","name":"zellij","label":"zellij","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/zellij","purlType":"apk","versions":[{"text":"< 0.44.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.44.0-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"wash","name":"wash","label":"wash","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/wash","purlType":"apk","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"wolfi","product":"wasmcloud","name":"wasmcloud","label":"wasmcloud","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/wasmcloud","purlType":"apk","versions":[{"text":"< 1.9.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.9.1-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"wizer","name":"wizer","label":"wizer","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/wizer","purlType":"apk","versions":[{"text":"< 10.0.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 10.0.0-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"yara-x","name":"yara-x","label":"yara-x","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/yara-x","purlType":"apk","versions":[{"text":"< 1.9.0-r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.9.0-r2","eol":null,"hubHref":null},{"vendor":"wolfi","product":"zed","name":"zed","label":"zed","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/zed","purlType":"apk","versions":[{"text":"< 0.228.0-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.228.0-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"zellij","name":"zellij","label":"zellij","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/zellij","purlType":"apk","versions":[{"text":"< 0.44.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.44.0-r0","eol":null,"hubHref":null},{"vendor":"bytecodealliance","product":"wasmtime","name":"wasmtime","label":"wasmtime","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 38.0.1, < 38.0.4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 37.0.0, < 37.0.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 26.0.0, < 36.0.3","noFixRecorded":false,"fixedIn":null},{"text":"< 24.0.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 38.0.1, < 38.0.4 | ≥ 37.0.0, < 37.0.3 | ≥ 26.0.0, < 36.0.3 | < 24.0.5","eol":null,"hubHref":"/vendor/bytecodealliance/wasmtime"},{"vendor":"Crates.Io","product":"wasmtime","name":"wasmtime","label":"wasmtime","ecosystem":"Crates.Io","cpePart":null,"purl":"pkg:cargo/wasmtime","purlType":"cargo","versions":[{"text":"≥ 37.0.0, < 37.0.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 26.0.0, < 36.0.3","noFixRecorded":false,"fixedIn":null},{"text":"< 24.0.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 38.0.0, < 38.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 37.0.0, < 37.0.3 | ≥ 26.0.0, < 36.0.3 | < 24.0.5 | ≥ 38.0.0, < 38.0.4","eol":null,"hubHref":null},{"vendor":"debian","product":"rust-wasmtime","name":"rust-wasmtime","label":"rust-wasmtime","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/rust-wasmtime","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 27.0.0+dfsg-2","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 27.0.0+dfsg-2","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"rust-wasmtime","name":"rust-wasmtime","label":"rust-wasmtime","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/rust-wasmtime","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null}],"affectedCount":16,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q","label":"github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q","hostname":"github.com","tags":["X Refsource CONFIRM","REPORT","Advisory","WEB"]},{"url":"https://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10","label":"github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10","hostname":"github.com","tags":["X Refsource MISC","REPORT","FIX","WEB"]},{"url":"https://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new","label":"docs.rs/wasmtime/latest/wasmtime/struct.Memory.html","hostname":"docs.rs","tags":["X Refsource MISC","REPORT","WEB"]},{"url":"https://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new","label":"docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html","hostname":"docs.rs","tags":["X Refsource MISC","REPORT","WEB"]},{"url":"https://docs.wasmtime.dev/stability-release.html","label":"docs.wasmtime.dev/stability-release.html","hostname":"docs.wasmtime.dev","tags":["X Refsource MISC","REPORT","WEB"]},{"url":"https://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4","label":"github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4","hostname":"github.com","tags":["X Refsource MISC","REPORT","WEB"]},{"url":"https://ubuntu.com/security/CVE-2025-64345","label":"ubuntu.com/security/CVE-2025-64345","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-64345","label":"www.cve.org/CVERecord?id=CVE-2025-64345","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-64345","label":"security-tracker.debian.org/tracker/CVE-2025-64345","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64345.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64345.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64345","label":"nvd.nist.gov/vuln/detail/CVE-2025-64345","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/bytecodealliance/wasmtime","label":"github.com/bytecodealliance/wasmtime","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://rustsec.org/advisories/RUSTSEC-2025-0118.html","label":"rustsec.org/advisories/RUSTSEC-2025-0118.html","hostname":"rustsec.org","tags":["WEB","Advisory"]},{"url":"https://crates.io/crates/wasmtime","label":"crates.io/crates/wasmtime","hostname":"crates.io","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CGA-8Q93-VFPQ-GGVG"]},"timeline":[{"kind":"published","date":"2025-11-12T21:25:50.832Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-11-12T21:40:37.909Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":7,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T13:36:21.306Z","stale":false,"partial":false}}