Abstract: A system and method for executing a method generating a binary patch file for live patching of an application is disclosed. In one exemplary aspect, the method comprises creating shared object by compiling source code patch file that contains source code of a new function corresponding to an old function, a global external symbol referenced in the source code of the new function, and at least one link to a symbol in an application binary code corresponding to the global external symbol, wherein the shared object contains binary code of the new function for replacing the old function during the live patching, and the result of a compilation of the link, generating metadata usable to facilitate the live patching, creating bindings between calculated relative addresses and the global external symbol referenced by the shared object, and creating the binary patch file by adding metadata to the shared object.

Abstract: A system and method for live patching a process in userspace is disclosed. In one exemplary aspect, a system for live patching comprises a process executing in userspace in an operating system executed by a hardware processor and a patcher configured to: suspend execution of the process, wherein a memory address space of the process contains binary code executed in the process, and wherein the binary code comprises one or more symbols, map a binary patch to the memory address space of the process, wherein the binary patch contains amendments to the binary code, wherein the binary patch references a portion of the one or more symbols, and wherein the binary patch contains metadata indicating offsets of the portion of the one or more symbols, resolve the portion of the one or more symbols using the offsets in the metadata and resume execution of the process.