An issue was discovered in Binaryen 1.38.32. Two visitors in ir/ExpressionManipulator.cpp can lead to a NULL pointer dereference in wasm::LocalSet::finalize in wasm/wasm.cpp. A crafted input can cause segmentation faults, leading to denial-of-service, as demonstrated by wasm2js.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Binaryen | Webassembly | * | 89 (excluding) |
| Binaryen | Ubuntu | disco | * |
| Binaryen | Ubuntu | trusty | * |
| Binaryen | Ubuntu | upstream | * |