Description
Wasmtime 47.0.0 before 48.0.6 and 49.0.0 before 49.0.3 contains a memory misalignment flaw in VMContext layout that causes undefined behavior when modules contain an odd number of exception tags. A WebAssembly module with an odd tag count misaligns subsequent host fields in embedders with exceptions enabled, although no exploitation path is currently known.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
bytecodealliance wasmtime
Default version status: unaffected
47.0.0 to < 48.0.6affected48.0.6unaffected49.0.0 to < 49.0.3affected49.0.3unaffected
pkg:cargo/wasmtime