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CVE-2020-18378

Description

A NULL pointer dereference was discovered in SExpressionWasmBuilder::makeBlock in wasm/wasm-s-parser.c in Binaryen 1.38.26. A crafted wasm input can cause a segmentation fault, leading to denial-of-service, as demonstrated by wasm-as.

POC

Reference

- https://github.com/WebAssembly/binaryen/issues/1900

Github

No PoCs found on GitHub currently.