Bug 2423928 (CVE-2025-14957)

Summary: CVE-2025-14957 binaryen: NULL pointer dereference in wasm::Function::getLocalType() when processing a malformed WebAssembly binary
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Binaryen. A NULL pointer dereference can be triggered in the wasm::Function::getLocalType function when processing a malformed WebAssembly binary, resulting in a denial of service.
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Description OSIDB Bzimport 2025-12-19 18:01:39 UTC 
A vulnerability was identified in WebAssembly Binaryen up to 125. This affects the function IRBuilder::makeLocalGet/IRBuilder::makeLocalSet/IRBuilder::makeLocalTee of the file src/wasm/wasm-ir-builder.cpp of the component IRBuilder. Such manipulation of the argument Index leads to null pointer dereference. Local access is required to approach this attack. The exploit is publicly available and might be used. The name of the patch is 6fb2b917a79578ab44cf3b900a6da4c27251e0d4. Applying a patch is advised to resolve this issue.