{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-64345", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2025-10-30T17:40:52.031Z", "datePublished": "2025-11-12T21:25:50.832Z", "dateUpdated": "2025-11-12T21:40:37.909Z"}, "containers": {"cna": {"title": "Wasmtime provides unsound API access to a WebAssembly shared linear memory", "problemTypes": [{"descriptions": [{"cweId": "CWE-362", "lang": "en", "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 1.8, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q"}, {"name": "https://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10", "tags": ["x_refsource_MISC"], "url": "https://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10"}, {"name": "https://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new", "tags": ["x_refsource_MISC"], "url": "https://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new"}, {"name": "https://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new", "tags": ["x_refsource_MISC"], "url": "https://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new"}, {"name": "https://docs.wasmtime.dev/stability-release.html", "tags": ["x_refsource_MISC"], "url": "https://docs.wasmtime.dev/stability-release.html"}, {"name": "https://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4"}], "affected": [{"vendor": "bytecodealliance", "product": "wasmtime", "versions": [{"version": ">= 38.0.1, < 38.0.4", "status": "affected"}, {"version": ">= 37.0.0, < 37.0.3", "status": "affected"}, {"version": ">= 26.0.0, < 36.0.3", "status": "affected"}, {"version": "< 24.0.5", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-11-12T21:25:50.832Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-hc7m-r6v8-hg9q", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-11-12T21:40:25.293462Z", "id": "CVE-2025-64345", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-11-12T21:40:37.909Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-64345", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-11-12T21:40:25.293462Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-11-12T21:40:34.331Z"}}], "cna": {"title": "Wasmtime provides unsound API access to a WebAssembly shared linear memory", "source": {"advisory": "GHSA-hc7m-r6v8-hg9q", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 1.8, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}}], "affected": [{"vendor": "bytecodealliance", "product": "wasmtime", "versions": [{"status": "affected", "version": ">= 38.0.1, < 38.0.4"}, {"status": "affected", "version": ">= 37.0.0, < 37.0.3"}, {"status": "affected", "version": ">= 26.0.0, < 36.0.3"}, {"status": "affected", "version": "< 24.0.5"}]}], "references": [{"url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q", "name": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10", "name": "https://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10", "tags": ["x_refsource_MISC"]}, {"url": "https://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new", "name": "https://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new", "tags": ["x_refsource_MISC"]}, {"url": "https://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new", "name": "https://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new", "tags": ["x_refsource_MISC"]}, {"url": "https://docs.wasmtime.dev/stability-release.html", "name": "https://docs.wasmtime.dev/stability-release.html", "tags": ["x_refsource_MISC"]}, {"url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4", "name": "https://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2025-11-12T21:25:50.832Z"}}}, "cveMetadata": {"cveId": "CVE-2025-64345", "state": "PUBLISHED", "dateUpdated": "2025-11-12T21:40:37.909Z", "dateReserved": "2025-10-30T17:40:52.031Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2025-11-12T21:25:50.832Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2025-64345", "lastModified": "2025-11-14T16:42:30.503", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 1.8, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 0.3, "impactScore": 1.4, "source": "[email protected]", "type": "Secondary"}]}, "published": "2025-11-12T22:15:49.623", "references": [{"source": "[email protected]", "url": "https://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new"}, {"source": "[email protected]", "url": "https://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new"}, {"source": "[email protected]", "url": "https://docs.wasmtime.dev/stability-release.html"}, {"source": "[email protected]", "url": "https://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10"}, {"source": "[email protected]", "url": "https://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4"}, {"source": "[email protected]", "url": "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "wasmtime: Wasmtime unsound API access to shared linear memory", "id": "2414696", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2414696"}, "csaw": false, "cvss3": {"cvss3_base_score": "1.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N", "status": "draft"}, "cwe": "CWE-362", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2025-64345", "package_state": [{"cpe": "cpe:/a:redhat:connectivity_link:1", "fix_state": "Fix deferred", "package_name": "rhcl-1/wasm-shim-rhel9", "product_name": "Red Hat Connectivity Link 1"}], "public_date": "2025-11-12T21:25:50Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-64345\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-64345\nhttps://docs.rs/wasmtime/latest/wasmtime/struct.Memory.html#method.new\nhttps://docs.rs/wasmtime/latest/wasmtime/struct.SharedMemory.html#method.new\nhttps://docs.wasmtime.dev/stability-release.html\nhttps://github.com/bytecodealliance/wasmtime/commit/9ebb6934f00d58b92fb68ed0e0b16c0ae828ca10\nhttps://github.com/bytecodealliance/wasmtime/releases/tag/v38.0.4\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hc7m-r6v8-hg9q"], "threat_severity": "Low"}