CVE-2025-43342
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-2025-43342 |
| Bugzilla | 296042 |
| Component | JSC |
| Bug Class | LogicError |
| Severity | medium |
| Commit | 8b9fc1b8515151cc… |
| Advisory | Apple Advisory |
Root Cause Analysis
A correctness issue was addressed with improved checks.
Files Changed
Source Files
Source/JavaScriptCore/bytecode/BytecodeList.rbSource/JavaScriptCore/dfg/DFGOSRExitCompilerCommon.cppSource/JavaScriptCore/llint/LLIntOpcode.hSource/JavaScriptCore/llint/LLIntSlowPaths.cppSource/JavaScriptCore/llint/LowLevelInterpreter64.asm
Test Files
JSTests/stress/instanceof-osr-exit-hasInstance-getter.jsJSTests/stress/instanceof-osr-exit-prototype-getter.js