CVE-2025-43343

Overview

Advisory: Apple Security Advisory

Impact:

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

Researchers: an anonymous researcher

Attribute	Value
CVE	CVE-2025-43343
Bugzilla	296490
Component	JSC
Bug Class	LogicError
Severity	medium
Commit	899a38cf9a50a555…
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-osr-stack-slot-positioning.js