CVE-2022-31104 describes two distinct bugs in Wasmtime's x86_64 implementation of the WebAssembly SIMD proposal, specifically affecting the i8x16.swizzle and select (for v128 types) instructions. These bugs, residing in the Cranelift code generator, lead to incorrect instruction lowerings that can corrupt constant values or incorrectly move vector data. The vulnerability is rated Medium (CVSS 5.6) due to its network-based attack vector and high attack complexity, potentially leading to low impact on confidentiality, integrity, and availability within guest programs. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.85.0CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:cranelift-codegen:*:*:*:*:*:rust:*:* | ||
< 0.38.1CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
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