PS5 Relapse Exploit Chains WebKit and Kernel Flaws to Gain Kernel Read/Write Access

Relapse is a publicly released PS5 exploit chain that combines a WebKit (JavaScriptCore) information leak and a kernel-level use-after-free race to achieve arbitrary kernel read/write on firmware versions 7.00–13.60, enabling execution of unsigned ELF payloads via a built-in loader on TCP port 9021; the release consolidates multiple firmware branches, documents stability and timing-related reliability issues, credits multiple contributors, and frames the project as intended for educational and authorized security research only.