Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's C API implementation where the definition of the `wasmtime_trap_code` does not match its declared signature in the `wasmtime/trap.h` head…
Exact source revision recorded 24 Oct 2026 21:25:23 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2024-0651
PublishedWasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's C API implementation where the definition of the `wasmtime_trap_code` does not match its declared signature in the `wasmtime/trap.h` header file. This discrepancy causes the function implementation to perform a 4-byte write into a 1-byte buffer provided by the caller. This can lead to three zero bytes being written beyond the 1-byte location provided by the caller. This bug has been patched and users should upgrade to Wasmtime 2.0.2. This bug can be worked around by providing a 4-byte buffer casted to a 1-byte buffer when calling `wasmtime_trap_code`. Users of the `wasmtime` crate are not affected by this issue, only users of the C API function `wasmtime_trap_code` are affected.
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Original publisher date fields
datePublished: Nov 10, 2022, 12:00:00 AM
dateUpdated: Apr 23, 2025, 4:39:05 PM
- Source published
- Nov 10, 2022, 12:00:00 AM (timezone not stated)
- Source modified
- Apr 23, 2025, 4:39:05 PM (timezone not stated)
- Observed here
- 24 Oct 2026 21:25:23 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
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EUVD CVSS 3.1 · 3.8 CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L