JavaScriptCore in WebKit, as distributed in Safari Technology Preview Release 18, allows remote attackers to cause a denial of service (bitfield out-of-bounds read and application crash) via crafted JavaScript code that is mishandled in the operatorString function, related to assembler/MacroAssemblerARM64.h, assembler/MacroAssemblerX86Common.h, and wasm/WasmB3IRGenerator.cpp.
- https://bugs.webkit.org/show_bug.cgi?id=165091
No PoCs found on GitHub currently.