Privilege escalation via libxpc out-of-bounds read

An out-of-bounds read in libxpc in iOS, macOS, tvOS, and watchOS allows local users to gain elevated privileges through an application. Apple states that libxpc performs an out-of-bounds read because bounds checking is insufficient, but it has not disclosed the affected function or input format. Exploitation requires local application execution and user interaction, and successful exploitation elevates that application's privileges.