Metrics
Affected Vendors & Products
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-hc7m-r6v8-hg9q | Wasmtime provides unsound API access to a WebAssembly shared linear memory |
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Thu, 13 Nov 2025 10:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Bytecodealliance
Bytecodealliance wasmtime |
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| Vendors & Products |
Bytecodealliance
Bytecodealliance wasmtime |
Wed, 12 Nov 2025 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 12 Nov 2025 21:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Wasmtime provides unsound API access to a WebAssembly shared linear memory | |
| Weaknesses | CWE-362 | |
| References |
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| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-11-12T21:40:37.909Z
Reserved: 2025-10-30T17:40:52.031Z
Link: CVE-2025-64345
Updated: 2025-11-12T21:40:34.331Z
Status : Received
Published: 2025-11-12T22:15:49.623
Modified: 2025-11-12T22:15:49.623
Link: CVE-2025-64345
No data.
OpenCVE Enrichment
Updated: 2025-11-13T09:52:22Z
Github GHSA