Apple iOS - Kernel Stack Memory Disclosure due to Failure to Check copyin Return Value

Here's a code snippet from sleh.c with the second level exception handler for undefined instruction exceptions: static void handleuncategorizedarmsavedstatet state, booleant instrLen2 exceptiontypet exception = EXCBADINSTRUCTION; machexceptiondatatypet codes2 = EXCARMUNDEFINED; machmsgtypenumbert...