{"id":"EUVD-2023-2511","revision":null,"records":[{"revision":"e7ad6d3927ee4e8ca7ae86af73cf6095","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-41880","aliases":[],"title":"Miscompilation of wasm `i64x2.shr_s` instruction with constant input on x86_64","description":"Wasmtime is a standalone runtime for WebAssembly. Wasmtime versions from 10.0.0 to versions 10.02, 11.0.2, and 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a constant value that is larger than 32. Only x86_64 is affected so all other targets are not affected by this. The miscompilation results in the instruction producing an incorrect result, namely the low 32-bits of the second lane of the vector are derived from the low 32-bits of the second lane of the input vector instead of the high 32-bits. The primary impact of this issue is that any WebAssembly program using the `i64x2.shr_s` with a constant shift amount larger than 32 may produce an incorrect result.\n\nThis issue is not an escape from the WebAssembly sandbox. Execution of WebAssembly guest programs will still behave correctly with respect to memory sandboxing and isolation from the host. Wasmtime considers non-spec-compliant behavior as a security issue nonetheless.\n\nThis issue was discovered through fuzzing of Wasmtime's code generator Cranelift.\n\nWasmtime versions 10.0.2, 11.0.2, and 12.0.2 are all patched to no longer have this miscompilation. This issue only affects x86_64 hosts and the only workaround is to either scan for this pattern in wasm modules which is nontrivial or to disable the SIMD proposal for WebAssembly. 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Wasmtime versions from 10.0.0 to versions 10.02, 11.0.2, and 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a const…","description":"Wasmtime is a standalone runtime for WebAssembly. Wasmtime versions from 10.0.0 to versions 10.02, 11.0.2, and 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a constant value that is larger than 32. Only x86_64 is affected so all other targets are not affected by this. The miscompilation results in the instruction producing an incorrect result, namely the low 32-bits of the second lane of the vector are derived from the low 32-bits of the second lane of the input vector instead of the high 32-bits. The primary impact of this issue is that any WebAssembly program using the `i64x2.shr_s` with a constant shift amount larger than 32 may produce an incorrect result.\n\nThis issue is not an escape from the WebAssembly sandbox. Execution of WebAssembly guest programs will still behave correctly with respect to memory sandboxing and isolation from the host. Wasmtime considers non-spec-compliant behavior as a security issue nonetheless.\n\nThis issue was discovered through fuzzing of Wasmtime's code generator Cranelift.\n\nWasmtime versions 10.0.2, 11.0.2, and 12.0.2 are all patched to no longer have this miscompilation. This issue only affects x86_64 hosts and the only workaround is to either scan for this pattern in wasm modules which is nontrivial or to disable the SIMD proposal for WebAssembly. Users prior to 10.0.0 are unaffected by this vulnerability.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","score":2.2,"severity":null}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh#:~:text=Mailing%20list%20announcement","https://github.com/bytecodealliance/wasmtime/pull/6372","https://github.com/bytecodealliance/wasmtime/commit/8d7eda15b0badcbea83a7aac2d08f80788b59240","https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-2511","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 15, 2023, 7:43:41 PM","dateUpdated":"Sep 24, 2024, 6:13:31 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2023-2511","identifiers":["EUVD-2023-2511","CVE-2023-41880","GHSA-gw5p-q8mj-p7gh"]},"retained":false,"historicalAffected":[]},{"revision":"9e2cd73879dd4863aa101451db26371c","observedAt":"2026-10-24T22:17:27.792+00:00","statement":{"source":"nvd","id":"CVE-2023-41880","aliases":[],"title":"Wasmtime is a standalone runtime for WebAssembly. Wasmtime versions from 10.0.0 to versions 10.02, 11.0.2, and 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a const…","description":"Wasmtime is a standalone runtime for WebAssembly. Wasmtime versions from 10.0.0 to versions 10.02, 11.0.2, and 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a constant value that is larger than 32. Only x86_64 is affected so all other targets are not affected by this. The miscompilation results in the instruction producing an incorrect result, namely the low 32-bits of the second lane of the vector are derived from the low 32-bits of the second lane of the input vector instead of the high 32-bits. The primary impact of this issue is that any WebAssembly program using the `i64x2.shr_s` with a constant shift amount larger than 32 may produce an incorrect result.\n\nThis issue is not an escape from the WebAssembly sandbox. Execution of WebAssembly guest programs will still behave correctly with respect to memory sandboxing and isolation from the host. Wasmtime considers non-spec-compliant behavior as a security issue nonetheless.\n\nThis issue was discovered through fuzzing of Wasmtime's code generator Cranelift.\n\nWasmtime versions 10.0.2, 11.0.2, and 12.0.2 are all patched to no longer have this miscompilation. This issue only affects x86_64 hosts and the only workaround is to either scan for this pattern in wasm modules which is nontrivial or to disable the SIMD proposal for WebAssembly. Users prior to 10.0.0 are unaffected by this vulnerability.","state":0,"publishedAt":"2023-09-15T20:15:11.017+00:00","modifiedAt":"2026-06-17T06:22:59.71+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","score":2.2,"severity":"LOW"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd","https://github.com/bytecodealliance/wasmtime/commit/8d7eda15b0badcbea83a7aac2d08f80788b59240","https://github.com/bytecodealliance/wasmtime/pull/6372","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh#:~:text=Mailing%20list%20announcement"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2023-41880","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-193"],"productCriteria":["cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:x64:*"],"sourceDates":{"published":"2023-09-15T20:15:11.017","lastModified":"2026-06-17T06:22:59.710"},"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-2023-41880","identifiers":["CVE-2023-41880"]},"retained":false,"historicalAffected":[]},{"revision":"fb89c929e0704e7995e1124a405d5146","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"GHSA-gw5p-q8mj-p7gh","aliases":["CVE-2023-41880","RUSTSEC-2023-0091"],"title":"Miscompilation of wasm `i64x2.shr_s` instruction with constant input on x86_64","description":"### Impact\n\nWasmtime versions from 10.0.0 to 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a constant value that is larger than 32. Only x86_64 is affected so all other targets are not affected by this. The miscompilation results in the instruction producing an incorrect result, namely the low 32-bits of the second lane of the vector are derived from the low 32-bits of the second lane of the input vector instead of the high 32-bits. The primary impact of this issue is that any WebAssembly program using the `i64x2.shr_s` with a constant shift amount larger than 32 may produce an incorrect result.\n\nThis issue is not an escape from the WebAssembly sandbox. Execution of WebAssembly guest programs will still behave correctly with respect to memory sandboxing and isolation from the host. Wasmtime considers non-spec-compliant behavior as a security issue nonetheless.\n\nThis issue was discovered through fuzzing of Wasmtime's code generator Cranelift.\n\n### Patches\n\nWasmtime versions 10.0.2, 11.0.2, and 12.0.2 are all patched to no longer have this miscompilation.\n\n### Workarounds\n\nThis issue only affects x86_64 hosts and the only workaround is to either scan for this pattern in wasm modules which is nontrivial or to [disable the SIMD proposal for WebAssembly](https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd). Users prior to 10.0.0 are unaffected by this vulnerability.\n\n### References\n\n* [PR which introduced this bug to Wasmtime](https://github.com/bytecodealliance/wasmtime/pull/6372)\n* [Mailing list announcement](https://groups.google.com/a/bytecodealliance.org/g/sec-announce/c/B8PJgg6bEdg)","state":0,"publishedAt":"2023-09-14T19:33:17+00:00","modifiedAt":"2026-07-08T06:28:42.9017377+00:00","affected":[{"ecosystem":"crates.io","name":"wasmtime","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"10.0.0"},{"kind":"fixed","version":"10.0.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"crates.io","name":"wasmtime","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"11.0.0"},{"kind":"fixed","version":"11.0.2"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"crates.io","name":"wasmtime","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"12.0.0"},{"kind":"fixed","version":"12.0.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"LOW"}],"references":["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh","https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh#:~:text=Mailing%20list%20announcement","https://nvd.nist.gov/vuln/detail/CVE-2023-41880","https://github.com/bytecodealliance/wasmtime/pull/6372","https://github.com/bytecodealliance/wasmtime/commit/8d7eda15b0badcbea83a7aac2d08f80788b59240","https://docs.rs/wasmtime/latest/wasmtime/struct.Config.html#method.wasm_simd","https://github.com/bytecodealliance/wasmtime","https://rustsec.org/advisories/RUSTSEC-2023-0091.html"],"sourceUrl":"https://github.com/advisories/GHSA-gw5p-q8mj-p7gh","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-gw5p-q8mj-p7gh","identifiers":["GHSA-gw5p-q8mj-p7gh","CVE-2023-41880","RUSTSEC-2023-0091"]},"retained":false,"historicalAffected":[]},{"revision":"ca8ec5ec0d8b4f77893161b54a53462b","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2023-0091","aliases":["CVE-2023-41880","GHSA-gw5p-q8mj-p7gh"],"title":"Miscompilation of wasm `i64x2.shr_s` instruction with constant input on x86\\_64","description":"This is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-gw5p-q8mj-p7gh.\nFor more information see the GitHub-hosted security advisory.","state":0,"publishedAt":"2023-09-05T12:00:00+00:00","modifiedAt":"2026-10-12T18:00:06.8139832+00:00","affected":[{"ecosystem":"crates.io","name":"wasmtime","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.0.0-0"},{"kind":"fixed","version":"10.0.2"},{"kind":"introduced","version":"11.0.0"},{"kind":"fixed","version":"11.0.2"},{"kind":"introduced","version":"12.0.0"},{"kind":"fixed","version":"12.0.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","score":null,"severity":null}],"references":["https://crates.io/crates/wasmtime","https://rustsec.org/advisories/RUSTSEC-2023-0091.html","https://github.com/bytecodealliance/wasmtime/pull/6372"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2023-0091","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2023-0091","identifiers":["RUSTSEC-2023-0091","CVE-2023-41880","GHSA-gw5p-q8mj-p7gh"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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