CVE-2025-43212

Overview

Advisory: Apple Security Advisory

Impact:

Description: Processing maliciously crafted web content may lead to an unexpected Safari crash

Researchers: Nan Wang (@eternalsakura13) and Ziling Chen

Attribute	Value
CVE	CVE-2025-43212
Bugzilla	293197
Component	JSC
Bug Class	LogicError
Severity	medium
Commit	240b9cb9889168bc…
Advisory	Apple Advisory

Root Cause Analysis

The issue was addressed with improved memory handling.

Files Changed

Source Files

• Source/JavaScriptCore/wasm/WasmOMGIRGenerator.cpp

Test Files

• JSTests/wasm/stress/omg-tail-call-to-function-with-less-arguments.js